Merge pull request #1319 from caarlos0/go-git

feat: upgrade go-git

go.mod

@@ -13,16 +13,12 @@ require (
 	cloud.google.com/go v0.38.0
 	github.com/Azure/azure-pipeline-go v0.2.2 // indirect
 	github.com/Azure/azure-storage-blob-go v0.8.0
-	github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7 // indirect
-	github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 // indirect
 	github.com/aws/aws-sdk-go v1.27.1
 	github.com/docker/docker v1.14.0-0.20190319215453-e7b5f7dbe98c
 	github.com/docker/go-metrics v0.0.0-20180209012529-399ea8c73916 // indirect
 	github.com/docker/swarmkit v1.12.1-0.20180726190244-7567d47988d8 // indirect
-	github.com/emirpasic/gods v1.9.0 // indirect
-	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
 	github.com/genuinetools/amicontained v0.4.3
-	github.com/gliderlabs/ssh v0.2.2 // indirect
+	github.com/go-git/go-git/v5 v5.1.0
 	github.com/golang/mock v1.3.1
 	github.com/google/go-cmp v0.3.0
 	github.com/google/go-containerregistry v0.0.0-20200313165449-955bf358a3d8
@@ -30,9 +26,7 @@ require (
 	github.com/google/go-querystring v1.0.0 // indirect
 	github.com/hashicorp/go-memdb v0.0.0-20180223233045-1289e7fffe71 // indirect
 	github.com/hashicorp/go-uuid v1.0.1 // indirect
-	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/karrick/godirwalk v1.7.7
-	github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e // indirect
 	github.com/mattn/go-ieproxy v0.0.0-20190805055040-f9202b1cfdeb // indirect
 	github.com/mattn/go-shellwords v1.0.3 // indirect
 	github.com/minio/highwayhash v1.0.0
@@ -41,22 +35,14 @@ require (
 	github.com/opencontainers/selinux v1.0.0-rc1 // indirect
 	github.com/opentracing/opentracing-go v1.0.2 // indirect
 	github.com/otiai10/copy v1.0.2
-	github.com/pelletier/go-buffruneio v0.2.0 // indirect
 	github.com/pkg/errors v0.9.1
-	github.com/sergi/go-diff v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/spf13/afero v1.2.2
 	github.com/spf13/cobra v0.0.5
 	github.com/spf13/pflag v1.0.5
-	github.com/src-d/gcfg v1.3.0 // indirect
 	github.com/tonistiigi/fsutil v0.0.0-20191018213012-0f039a052ca1 // indirect
 	github.com/vbatts/tar-split v0.10.2 // indirect
-	github.com/xanzy/ssh-agent v0.2.0 // indirect
-	golang.org/x/net v0.0.0-20200226121028-0de0cce0169b
+	golang.org/x/net v0.0.0-20200301022130-244492dfa37a
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
-	gopkg.in/src-d/go-billy.v4 v4.2.0 // indirect
-	gopkg.in/src-d/go-git-fixtures.v3 v3.5.0 // indirect
-	gopkg.in/src-d/go-git.v4 v4.6.0
-	gopkg.in/warnings.v0 v0.1.2 // indirect
 )

go.sum

@@ -56,6 +56,8 @@ github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 h1:kFOfPq6dUM1hTo
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/apache/thrift v0.0.0-20161221203622-b2a4d4ae21c7/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
+github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
 github.com/aws/aws-sdk-go v1.16.26/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.27.1 h1:MXnqY6SlWySaZAqNnXThOvjRFdiiOuKtC6i7baFdNdU=
 github.com/aws/aws-sdk-go v1.27.1/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
@@ -98,6 +100,7 @@ github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfc
 github.com/coreos/pkg v0.0.0-20180108230652-97fdf19511ea/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v0.0.0-20151105211317-5215b55f46b2/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -139,8 +142,8 @@ github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25Kn
 github.com/elazarl/goproxy v0.0.0-20170405201442-c4fc26588b6e/go.mod h1:/Zj4wYkgs4iZTTu3o/KG3Itv/qCCa8VVMlb3i9OVuzc=
 github.com/emicklei/go-restful v0.0.0-20170410110728-ff4f55a20633/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
 github.com/emicklei/go-restful v2.9.5+incompatible/go.mod h1:otzb+WCGbkyDHkqmQmT5YD2WR4BBwUdeQoFo8l/7tVs=
-github.com/emirpasic/gods v1.9.0 h1:rUF4PuzEjMChMiNsVjdI+SyLu7rEqpQ5reNFnhC7oFo=
-github.com/emirpasic/gods v1.9.0/go.mod h1:YfzfFFoVP/catgzJb4IKIqXjX78Ha8FMSDh3ymbK86o=
+github.com/emirpasic/gods v1.12.0 h1:QAUIPSaCu4G+POclxeqb3F+WPpdKqFGlw36+yOzGlrg=
+github.com/emirpasic/gods v1.12.0/go.mod h1:YfzfFFoVP/catgzJb4IKIqXjX78Ha8FMSDh3ymbK86o=
 github.com/evanphx/json-patch v4.2.0+incompatible h1:fUDGZCv/7iAN7u0puUVhvKCcsR6vRfwrJatElLBEf0I=
 github.com/evanphx/json-patch v4.2.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
@@ -155,6 +158,14 @@ github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gliderlabs/ssh v0.2.2 h1:6zsha5zo/TWhRhwqCD3+EarCAgZ2yN28ipRnGPnwkI0=
 github.com/gliderlabs/ssh v0.2.2/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
+github.com/go-git/gcfg v1.5.0 h1:Q5ViNfGF8zFgyJWPqYwA7qGFoMTEiBmdlkcfRmpIMa4=
+github.com/go-git/gcfg v1.5.0/go.mod h1:5m20vg6GwYabIxaOonVkTdrILxQMpEShl1xiMF4ua+E=
+github.com/go-git/go-billy/v5 v5.0.0 h1:7NQHvd9FVid8VL4qVUMm8XifBK+2xCoZ2lSk0agRrHM=
+github.com/go-git/go-billy/v5 v5.0.0/go.mod h1:pmpqyWchKfYfrkb/UVH4otLvyi/5gJlGI4Hb3ZqZ3W0=
+github.com/go-git/go-git-fixtures/v4 v4.0.1 h1:q+IFMfLx200Q3scvt2hN79JsEzy4AmBTp/pqnefH+Bc=
+github.com/go-git/go-git-fixtures/v4 v4.0.1/go.mod h1:m+ICp2rF3jDhFgEZ/8yziagdT1C+ZpZcrJjappBCDSw=
+github.com/go-git/go-git/v5 v5.1.0 h1:HxJn9g/E7eYvKW3Fm7Jt4ee8LXfPOm/H1cdDu8vEssk=
+github.com/go-git/go-git/v5 v5.1.0/go.mod h1:ZKfuPUoY1ZqIG4QG9BDBh3G4gLM5zvPuSJAozQrZuyM=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
@@ -254,12 +265,15 @@ github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/imdario/mergo v0.3.5/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
+github.com/imdario/mergo v0.3.9 h1:UauaLniWCFHWd+Jp9oCEkTBj8VO/9DKg3PV3VCNMDIg=
+github.com/imdario/mergo v0.3.9/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/ishidawataru/sctp v0.0.0-20180213033435-07191f837fed/go.mod h1:DM4VvS+hD/kDi1U1QsX2fnZowwBhqD0Dk3bRPKF/Oc8=
 github.com/jaguilar/vt100 v0.0.0-20150826170717-2703a27b14ea/go.mod h1:QMdK4dGB3YhEW2BmA1wgGpPYI3HZy/5gD705PXKUVSg=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOlocH6Fxy8MmwDt+yVQYULKfN0RoTN8A=
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
+github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af h1:pmfjZENx5imkbgOkpRUYLnmbU7UEFbjtDA2hxJ1ichM=
 github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
 github.com/joefitzgerald/rainbow-reporter v0.1.0/go.mod h1:481CNgqmVHQZzdIbN52CupLJyoVwB10FQ/IQlF1pdL8=
@@ -273,8 +287,8 @@ github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/karrick/godirwalk v1.7.7 h1:lLkPCA+C0u1pI4fLFseaupvh5/THlPJIqSPmnGGViKs=
 github.com/karrick/godirwalk v1.7.7/go.mod h1:2c9FRhkDxdIbgkOnCEvnSWs71Bhugbl46shStcFDJ34=
-github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e h1:RgQk53JHp/Cjunrr1WlsXSZpqXn+uREuHvUVcK82CV8=
-github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
+github.com/kevinburke/ssh_config v0.0.0-20190725054713-01f96b0aa0cd h1:Coekwdh0v2wtGp9Gmz1Ze3eVRAWJMLokvN3QjdzCHLY=
+github.com/kevinburke/ssh_config v0.0.0-20190725054713-01f96b0aa0cd/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
@@ -289,6 +303,8 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.5/go.mod h1:9r2w37qlBe7rQ6e1fg1S/9xpWHSnaqNdHD3WcMdbPDA=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20160728113105-d5b7844b561a/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
@@ -330,6 +346,8 @@ github.com/munnerz/goautoneg v0.0.0-20120707110453-a547fc61f48d/go.mod h1:+n7T8m
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
 github.com/onsi/ginkgo v0.0.0-20170829012221-11459a886d9c h1:Hww8mOyEKTeON4bZn7FrlLismspbPc1teNRUVH7wLQ8=
 github.com/onsi/ginkgo v0.0.0-20170829012221-11459a886d9c/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -366,8 +384,6 @@ github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95 h1:+OLn68pqasWca0z5ry
 github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95/go.mod h1:9qAhocn7zKJG+0mI8eUu6xqkFDYS2kb2saOteoSB3cE=
 github.com/otiai10/mint v1.3.0 h1:Ady6MKVezQwHBkGzLFbrsywyp09Ah7rkmfjV3Bcr5uc=
 github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT91xUo=
-github.com/pelletier/go-buffruneio v0.2.0 h1:U4t4R6YkofJ5xHm3dJzuRpPZ0mr5MMCoAWooScCR7aA=
-github.com/pelletier/go-buffruneio v0.2.0/go.mod h1:JkE26KsDizTr40EUHkXVtNPvgGtbSNq5BcowyYOWdKo=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/peterbourgon/diskv v2.0.1+incompatible h1:UBdAOUP5p4RWqPBg048CAvpKN+vxiaj6gdUUzhl4XmI=
 github.com/peterbourgon/diskv v2.0.1+incompatible/go.mod h1:uqqh8zWWbv1HBMNONnaR/tNboyR3/BZd58JJSHlUSCU=
@@ -399,8 +415,8 @@ github.com/rubiojr/go-vhd v0.0.0-20160810183302-0bfd3b39853c/go.mod h1:DM5xW0nvf
 github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
 github.com/sclevine/spec v1.2.0/go.mod h1:W4J29eT/Kzv7/b9IWLB055Z+qvVC9vt0Arko24q7p+U=
-github.com/sergi/go-diff v1.0.0 h1:Kpca3qRNrduNnOQeazBd0ysaKrUJiIuISHxogkT9RPQ=
-github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
+github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
+github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/serialx/hashring v0.0.0-20190422032157-8b2912629002/go.mod h1:/yeG0My1xr/u+HZrFQ1tOQQQQrOawfyMUH13ai5brBc=
 github.com/sirupsen/logrus v1.0.3/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
@@ -422,8 +438,6 @@ github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnIn
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DMA2s=
-github.com/src-d/gcfg v1.3.0 h1:2BEDr8r0I0b8h/fOqwtxCEiq2HJu8n2JGZJQFGXWLjg=
-github.com/src-d/gcfg v1.3.0/go.mod h1:p/UMsR43ujA89BJY9duynAwIpvqEujIH/jFlfL7jWoI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
@@ -450,8 +464,8 @@ github.com/vdemeester/k8s-pkg-credentialprovider v1.17.4/go.mod h1:inCTmtUdr5KJb
 github.com/vishvananda/netlink v1.0.0/go.mod h1:+SR5DhBJrl6ZM7CoCKvpw5BKroDKQ+PJqOg65H/2ktk=
 github.com/vishvananda/netns v0.0.0-20180720170159-13995c7128cc/go.mod h1:ZjcWmFBXmLKZu9Nxj3WKYEafiSqer2rnvPr0en9UNpI=
 github.com/vmware/govmomi v0.20.3/go.mod h1:URlwyTFZX72RmxtxuaFL2Uj3fD1JTvZdx59bHWk6aFU=
-github.com/xanzy/ssh-agent v0.2.0 h1:Adglfbi5p9Z0BmK2oKU9nTG+zKfniSfnaMYB+ULd+Ro=
-github.com/xanzy/ssh-agent v0.2.0/go.mod h1:0NyE30eGUDliuLEHJgYte/zncp2zdTStcOnWhgSqHD8=
+github.com/xanzy/ssh-agent v0.2.1 h1:TCbipTQL2JiiCprBWx9frJ2eJlCYT00NmctrHxVAr70=
+github.com/xanzy/ssh-agent v0.2.1/go.mod h1:mLlQY/MoOhWBj+gOGMQkOeiEvkx+8pJSI+0Bx9h2kr4=
 github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q53MR2AWcXfiuqkDkRtnGDLqkBTpCHuJHxtU=
 github.com/xordataexchange/crypt v0.0.3-0.20170626215501-b2862e3d0a77/go.mod h1:aYKd//L2LvnjZzWKhF00oedf4jCCReLcmhLdhm1A27Q=
 go.etcd.io/bbolt v1.3.3 h1:MUGmc65QhB3pIlaQ5bB4LwqSj6GIonVJXpZiaKNyaKk=
@@ -465,6 +479,7 @@ go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20190219172222-a4c6cb3142f2/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8 h1:1wopBVtVdWnn03fZelqdXTqk7U7zPQCb+T4rbU9ZEoU=
@@ -473,6 +488,8 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191206172530-e9b2fee46413/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200220183623-bac4c82f6975 h1:/Tl7pH94bvbAAHBdZJT947M/+gp0+CqQXDtMRC0fseo=
 golang.org/x/crypto v0.0.0-20200220183623-bac4c82f6975/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073 h1:xMPOj6Pz6UipU1wXLkrtqpHbR0AVFnyPEQq/wRWz9lM=
+golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190125153040-c74c464bbbf2/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190312203227-4b39c73a6495/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -505,8 +522,8 @@ golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191004110552-13f9640d40b9 h1:rjwSpXsdiK0dV8/Naq3kAw9ymfAeJIyd0upUIElB+lI=
 golang.org/x/net v0.0.0-20191004110552-13f9640d40b9/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b h1:0mm1VjtFUOIlE1SbDlwjYaDxZVDP2S5ou6y0gSgXHu8=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200301022130-244492dfa37a h1:GuSPYbZzB5/dcLNCwLQLsg3obCJtX9IJhpXkvY7kzk0=
+golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be h1:vEDujvNQGv4jgYKudGeI/+DAX4Jffq6hpD55MmoEvKs=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -533,6 +550,7 @@ golang.org/x/sys v0.0.0-20190130150945-aca44879d564/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20190209173611-3b5209105503/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190221075227-b4e8571b14e0/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
@@ -544,6 +562,8 @@ golang.org/x/sys v0.0.0-20190812073006-9eafafc0a87e/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY=
 golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 h1:uYVVQ9WP/Ds2ROhcaGPeIdVq0RIXVLwsHlnvJ+cT1So=
+golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -606,6 +626,9 @@ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLks
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
@@ -616,12 +639,6 @@ gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
-gopkg.in/src-d/go-billy.v4 v4.2.0 h1:VGbrP1EsYxtvVPEiHui+4//imr4E5MGEFLx66bQtusg=
-gopkg.in/src-d/go-billy.v4 v4.2.0/go.mod h1:ZHSF0JP+7oD97194otDUCD7Ofbk63+xFcfWP5bT6h+Q=
-gopkg.in/src-d/go-git-fixtures.v3 v3.5.0 h1:ivZFOIltbce2Mo8IjzUHAFoq/IylO9WHhNOAJK+LsJg=
-gopkg.in/src-d/go-git-fixtures.v3 v3.5.0/go.mod h1:dLBcvytrw/TYZsNTWCnkNF2DSIlzWYqTe3rJR56Ac7g=
-gopkg.in/src-d/go-git.v4 v4.6.0 h1:3XrA9Qxiwfj7Iusd7dVYUqxMjJYPsLuBdUeQbwnL/NQ=
-gopkg.in/src-d/go-git.v4 v4.6.0/go.mod h1:CzbUWqMn4pvmvndg3gnh5iZFmSsbhyhUWdI0IQ60AQo=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/warnings.v0 v0.1.1/go.mod h1:jksf8JmL6Qr/oQM2OXTHunEvvTAsrWBLb6OOjuVWRNI=

pkg/buildcontext/git.go

@@ -21,10 +21,10 @@ import (
 	"strings"
 
 	"github.com/GoogleContainerTools/kaniko/pkg/constants"
-	git "gopkg.in/src-d/go-git.v4"
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
+	"github.com/go-git/go-git/v5"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/transport"
+	"github.com/go-git/go-git/v5/plumbing/transport/http"
 )
 
 const (

pkg/buildcontext/git_test.go

@@ -21,8 +21,8 @@ import (
 	"testing"
 
 	"github.com/GoogleContainerTools/kaniko/testutil"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
+	"github.com/go-git/go-git/v5/plumbing/transport"
+	"github.com/go-git/go-git/v5/plumbing/transport/http"
 )
 
 func TestGetGitPullMethod(t *testing.T) {

vendor/github.com/emirpasic/gods/containers/enumerable.go

@@ -11,7 +11,7 @@ type EnumerableWithIndex interface {
 
 	// Map invokes the given function once for each element and returns a
 	// container containing the values returned by the given function.
-	// TODO need help on how to enforce this in containers (don't want to type assert when chaining)
+	// TODO would appreciate help on how to enforce this in containers (don't want to type assert when chaining)
 	// Map(func(index int, value interface{}) interface{}) Container
 
 	// Select returns a new container containing all elements for which the given function returns a true value.

vendor/github.com/emirpasic/gods/lists/arraylist/arraylist.go

@@ -11,9 +11,10 @@ package arraylist
 
 import (
 	"fmt"
+	"strings"
+
 	"github.com/emirpasic/gods/lists"
 	"github.com/emirpasic/gods/utils"
-	"strings"
 )
 
 func assertListImplementation() {
@@ -31,9 +32,13 @@ const (
 	shrinkFactor = float32(0.25) // shrink when size is 25% of capacity (0 means never shrink)
 )
 
-// New instantiates a new empty list
-func New() *List {
-	return &List{}
+// New instantiates a new list and adds the passed values, if any, to the list
+func New(values ...interface{}) *List {
+	list := &List{}
+	if len(values) > 0 {
+		list.Add(values...)
+	}
+	return list
 }
 
 // Add appends a value at the end of the list
@@ -56,7 +61,7 @@ func (list *List) Get(index int) (interface{}, bool) {
 	return list.elements[index], true
 }
 
-// Remove removes one or more elements from the list with the supplied indices.
+// Remove removes the element at the given index from the list.
 func (list *List) Remove(index int) {
 
 	if !list.withinRange(index) {
@@ -98,6 +103,19 @@ func (list *List) Values() []interface{} {
 	return newElements
 }
 
+//IndexOf returns index of provided element
+func (list *List) IndexOf(value interface{}) int {
+	if list.size == 0 {
+		return -1
+	}
+	for index, element := range list.elements {
+		if element == value {
+			return index
+		}
+	}
+	return -1
+}
+
 // Empty returns true if list does not contain any elements.
 func (list *List) Empty() bool {
 	return list.size == 0
@@ -145,14 +163,24 @@ func (list *List) Insert(index int, values ...interface{}) {
 	l := len(values)
 	list.growBy(l)
 	list.size += l
-	// Shift old to right
-	for i := list.size - 1; i >= index+l; i-- {
-		list.elements[i] = list.elements[i-l]
-	}
-	// Insert new
-	for i, value := range values {
-		list.elements[index+i] = value
+	copy(list.elements[index+l:], list.elements[index:list.size-l])
+	copy(list.elements[index:], values)
+}
+
+// Set the value at specified index
+// Does not do anything if position is negative or bigger than list's size
+// Note: position equal to list's size is valid, i.e. append.
+func (list *List) Set(index int, value interface{}) {
+
+	if !list.withinRange(index) {
+		// Append
+		if index == list.size {
+			list.Add(value)
+		}
+		return
 	}
+
+	list.elements[index] = value
 }
 
 // String returns a string representation of container

vendor/github.com/emirpasic/gods/lists/lists.go

@@ -23,6 +23,7 @@ type List interface {
 	Sort(comparator utils.Comparator)
 	Swap(index1, index2 int)
 	Insert(index int, values ...interface{})
+	Set(index int, value interface{})
 
 	containers.Container
 	// Empty() bool

vendor/github.com/emirpasic/gods/trees/binaryheap/serialization.go

@@ -11,12 +11,12 @@ func assertSerializationImplementation() {
 	var _ containers.JSONDeserializer = (*Heap)(nil)
 }
 
-// ToJSON outputs the JSON representation of list's elements.
+// ToJSON outputs the JSON representation of the heap.
 func (heap *Heap) ToJSON() ([]byte, error) {
 	return heap.list.ToJSON()
 }
 
-// FromJSON populates list's elements from the input JSON representation.
+// FromJSON populates the heap from the input JSON representation.
 func (heap *Heap) FromJSON(data []byte) error {
 	return heap.list.FromJSON(data)
 }

vendor/github.com/go-git/gcfg/doc.go

@@ -142,4 +142,4 @@
 //    - make error context accessible programmatically?
 //    - limit input size?
 //
-package gcfg // import "github.com/src-d/gcfg"
+package gcfg // import "github.com/go-git/gcfg"

vendor/github.com/go-git/gcfg/read.go

@@ -7,12 +7,12 @@ import (
 	"os"
 	"strings"
 
-	"github.com/src-d/gcfg/scanner"
-	"github.com/src-d/gcfg/token"
+	"github.com/go-git/gcfg/scanner"
+	"github.com/go-git/gcfg/token"
 	"gopkg.in/warnings.v0"
 )
 
-var unescape = map[rune]rune{'\\': '\\', '"': '"', 'n': '\n', 't': '\t'}
+var unescape = map[rune]rune{'\\': '\\', '"': '"', 'n': '\n', 't': '\t', 'b': '\b'}
 
 // no error: invalid literals should be caught by scanner
 func unquote(s string) string {
@@ -48,7 +48,7 @@ func unquote(s string) string {
 	return string(u)
 }
 
-func read(c *warnings.Collector, callback func(string,string,string,string,bool)error,
+func read(c *warnings.Collector, callback func(string, string, string, string, bool) error,
 	fset *token.FileSet, file *token.File, src []byte) error {
 	//
 	var s scanner.Scanner
@@ -223,7 +223,7 @@ func readInto(config interface{}, fset *token.FileSet, file *token.File,
 // (as opposed to set to empty string).
 //
 // If callback returns an error, ReadWithCallback terminates with an error too.
-func ReadWithCallback(reader io.Reader, callback func(string,string,string,string,bool)error) error {
+func ReadWithCallback(reader io.Reader, callback func(string, string, string, string, bool) error) error {
 	src, err := ioutil.ReadAll(reader)
 	if err != nil {
 		return err

vendor/github.com/go-git/gcfg/scanner/errors.go

@@ -11,7 +11,7 @@ import (
 )
 
 import (
-	"github.com/src-d/gcfg/token"
+	"github.com/go-git/gcfg/token"
 )
 
 // In an ErrorList, an error is represented by an *Error.

vendor/github.com/go-git/gcfg/scanner/scanner.go

@@ -19,7 +19,7 @@ import (
 )
 
 import (
-	"github.com/src-d/gcfg/token"
+	"github.com/go-git/gcfg/token"
 )
 
 // An ErrorHandler may be provided to Scanner.Init. If a syntax error is
@@ -170,7 +170,7 @@ func (s *Scanner) scanEscape(val bool) {
 	switch ch {
 	case '\\', '"':
 		// ok
-	case 'n', 't':
+	case 'n', 't', 'b':
 		if val {
 			break // ok
 		}
@@ -232,10 +232,10 @@ loop:
 				s.next()
 			}
 			if s.ch != '\n' {
-				s.error(offs, "unquoted '\\' must be followed by new line")
-				break loop
+				s.scanEscape(true)
+			} else {
+				s.next()
 			}
-			s.next()
 		case ch == '"':
 			inQuote = !inQuote
 		case ch == '\r':

vendor/github.com/go-git/gcfg/set.go

@@ -10,7 +10,7 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"github.com/src-d/gcfg/types"
+	"github.com/go-git/gcfg/types"
 	"gopkg.in/warnings.v0"
 )
 

vendor/github.com/go-git/go-billy/v5/.gitignore

@@ -0,0 +1,4 @@
+/coverage.txt
+/vendor
+Gopkg.lock
+Gopkg.toml

vendor/github.com/go-git/go-billy/v5/README.md

@@ -1,20 +1,21 @@
-# go-billy [![GoDoc](https://godoc.org/gopkg.in/src-d/go-billy.v4?status.svg)](https://godoc.org/gopkg.in/src-d/go-billy.v4) [![Build Status](https://travis-ci.org/src-d/go-billy.svg)](https://travis-ci.org/src-d/go-billy) [![Build status](https://ci.appveyor.com/api/projects/status/vx2qn6vlakbi724t?svg=true)](https://ci.appveyor.com/project/mcuadros/go-billy) [![codecov](https://codecov.io/gh/src-d/go-billy/branch/master/graph/badge.svg)](https://codecov.io/gh/src-d/go-billy)
+# go-billy [![GoDoc](https://godoc.org/gopkg.in/go-git/go-billy.v5?status.svg)](https://pkg.go.dev/github.com/go-git/go-billy) [![Test](https://github.com/go-git/go-billy/workflows/Test/badge.svg)](https://github.com/go-git/go-billy/actions?query=workflow%3ATest)
 
 The missing interface filesystem abstraction for Go.
-Billy implements an interface based on the `os` standard library, allowing to develop applications without dependency on the underlying storage. Make virtually free implement an mocks and testing over filesystem operations.
+Billy implements an interface based on the `os` standard library, allowing to develop applications without dependency on the underlying storage. Makes it virtually free to implement mocks and testing over filesystem operations.
 
-Billy was born as part of [src-d/go-git](https://github.com/src-d/go-git) project.
+Billy was born as part of [go-git/go-git](https://github.com/go-git/go-git) project.
 
 ## Installation
 
 ```go
-go get -u gopkg.in/src-d/go-billy.v4/...
+import "github.com/go-git/go-billy/v5" // with go modules enabled (GO111MODULE=on or outside GOPATH)
+import "github.com/go-git/go-billy" // with go modules disabled
 ```
 
 ## Usage
 
 Billy exposes filesystems using the
-[`Filesystem` interface](https://godoc.org/github.com/src-d/go-billy#Filesystem).
+[`Filesystem` interface](https://pkg.go.dev/github.com/go-git/go-billy/v5?tab=doc#Filesystem).
 Each filesystem implementation gives you a `New` method, whose arguments depend on
 the implementation itself, that returns a new `Filesystem`.
 

vendor/github.com/go-git/go-billy/v5/go.mod

@@ -0,0 +1,10 @@
+module github.com/go-git/go-billy/v5
+
+require (
+	github.com/kr/text v0.2.0 // indirect
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f
+)
+
+go 1.13

vendor/github.com/go-git/go-billy/v5/go.sum

@@ -0,0 +1,14 @@
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/go-git/go-billy v1.0.0 h1:bXR6Zu3opPSg0R4dDxqaLglY4rxw7ja7wS16qSpOKL4=
+github.com/go-git/go-billy v3.1.0+incompatible h1:dwrJ8G2Jt1srYgIJs+lRjA36qBY68O2Lg5idKG8ef5M=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
+golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 h1:uYVVQ9WP/Ds2ROhcaGPeIdVq0RIXVLwsHlnvJ+cT1So=
+golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

vendor/github.com/go-git/go-billy/v5/helper/chroot/chroot.go

@@ -5,8 +5,8 @@ import (
 	"path/filepath"
 	"strings"
 
-	"gopkg.in/src-d/go-billy.v4"
-	"gopkg.in/src-d/go-billy.v4/helper/polyfill"
+	"github.com/go-git/go-billy/v5"
+	"github.com/go-git/go-billy/v5/helper/polyfill"
 )
 
 // ChrootHelper is a helper to implement billy.Chroot.

vendor/github.com/go-git/go-billy/v5/helper/polyfill/polyfill.go

@@ -4,7 +4,7 @@ import (
 	"os"
 	"path/filepath"
 
-	"gopkg.in/src-d/go-billy.v4"
+	"github.com/go-git/go-billy/v5"
 )
 
 // Polyfill is a helper that implements all missing method from billy.Filesystem.

vendor/github.com/go-git/go-billy/v5/osfs/os.go

@@ -1,5 +1,5 @@
 // Package osfs provides a billy filesystem for the OS.
-package osfs // import "gopkg.in/src-d/go-billy.v4/osfs"
+package osfs // import "github.com/go-git/go-billy/v5/osfs"
 
 import (
 	"io/ioutil"
@@ -7,8 +7,8 @@ import (
 	"path/filepath"
 	"sync"
 
-	"gopkg.in/src-d/go-billy.v4"
-	"gopkg.in/src-d/go-billy.v4/helper/chroot"
+	"github.com/go-git/go-billy/v5"
+	"github.com/go-git/go-billy/v5/helper/chroot"
 )
 
 const (
@@ -72,7 +72,7 @@ func (fs *OS) Rename(from, to string) error {
 		return err
 	}
 
-	return os.Rename(from, to)
+	return rename(from, to)
 }
 
 func (fs *OS) MkdirAll(path string, perm os.FileMode) error {

vendor/github.com/go-git/go-billy/v5/osfs/os_plan9.go

@@ -0,0 +1,83 @@
+package osfs
+
+import (
+	"io"
+	"os"
+	"path/filepath"
+	"syscall"
+)
+
+func (f *file) Lock() error {
+	// Plan 9 uses a mode bit instead of explicit lock/unlock syscalls.
+	//
+	// Per http://man.cat-v.org/plan_9/5/stat: “Exclusive use files may be open
+	// for I/O by only one fid at a time across all clients of the server. If a
+	// second open is attempted, it draws an error.”
+	//
+	// There is no obvious way to implement this function using the exclusive use bit.
+	// See https://golang.org/src/cmd/go/internal/lockedfile/lockedfile_plan9.go
+	// for how file locking is done by the go tool on Plan 9.
+	return nil
+}
+
+func (f *file) Unlock() error {
+	return nil
+}
+
+func rename(from, to string) error {
+	// If from and to are in different directories, copy the file
+	// since Plan 9 does not support cross-directory rename.
+	if filepath.Dir(from) != filepath.Dir(to) {
+		fi, err := os.Stat(from)
+		if err != nil {
+			return &os.LinkError{"rename", from, to, err}
+		}
+		if fi.Mode().IsDir() {
+			return &os.LinkError{"rename", from, to, syscall.EISDIR}
+		}
+		fromFile, err := os.Open(from)
+		if err != nil {
+			return &os.LinkError{"rename", from, to, err}
+		}
+		toFile, err := os.OpenFile(to, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, fi.Mode())
+		if err != nil {
+			return &os.LinkError{"rename", from, to, err}
+		}
+		_, err = io.Copy(toFile, fromFile)
+		if err != nil {
+			return &os.LinkError{"rename", from, to, err}
+		}
+
+		// Copy mtime and mode from original file.
+		// We need only one syscall if we avoid os.Chmod and os.Chtimes.
+		dir := fi.Sys().(*syscall.Dir)
+		var d syscall.Dir
+		d.Null()
+		d.Mtime = dir.Mtime
+		d.Mode = dir.Mode
+		if err = dirwstat(to, &d); err != nil {
+			return &os.LinkError{"rename", from, to, err}
+		}
+
+		// Remove original file.
+		err = os.Remove(from)
+		if err != nil {
+			return &os.LinkError{"rename", from, to, err}
+		}
+		return nil
+	}
+	return os.Rename(from, to)
+}
+
+func dirwstat(name string, d *syscall.Dir) error {
+	var buf [syscall.STATFIXLEN]byte
+
+	n, err := d.Marshal(buf[:])
+	if err != nil {
+		return &os.PathError{"dirwstat", name, err}
+	}
+	if err = syscall.Wstat(name, buf[:n]); err != nil {
+		return &os.PathError{"dirwstat", name, err}
+	}
+	return nil
+}

vendor/github.com/go-git/go-billy/v5/osfs/os_posix.go

@@ -0,0 +1,27 @@
+// +build !plan9,!windows
+
+package osfs
+
+import (
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+func (f *file) Lock() error {
+	f.m.Lock()
+	defer f.m.Unlock()
+
+	return unix.Flock(int(f.File.Fd()), unix.LOCK_EX)
+}
+
+func (f *file) Unlock() error {
+	f.m.Lock()
+	defer f.m.Unlock()
+
+	return unix.Flock(int(f.File.Fd()), unix.LOCK_UN)
+}
+
+func rename(from, to string) error {
+	return os.Rename(from, to)
+}

vendor/github.com/go-git/go-billy/v5/osfs/os_windows.go

@@ -55,3 +55,7 @@ func (f *file) Unlock() error {
 	}
 	return nil
 }
+
+func rename(from, to string) error {
+	return os.Rename(from, to)
+}

vendor/github.com/go-git/go-billy/v5/util/glob.go

@@ -5,7 +5,7 @@ import (
 	"sort"
 	"strings"
 
-	"gopkg.in/src-d/go-billy.v4"
+	"github.com/go-git/go-billy/v5"
 )
 
 // Glob returns the names of all files matching pattern or nil

vendor/github.com/go-git/go-billy/v5/util/util.go

@@ -8,7 +8,7 @@ import (
 	"sync"
 	"time"
 
-	"gopkg.in/src-d/go-billy.v4"
+	"github.com/go-git/go-billy/v5"
 )
 
 // RemoveAll removes path and any children it contains. It removes everything it
@@ -168,6 +168,45 @@ func TempFile(fs billy.Basic, dir, prefix string) (f billy.File, err error) {
 	return
 }
 
+// TempDir creates a new temporary directory in the directory dir
+// with a name beginning with prefix and returns the path of the
+// new directory. If dir is the empty string, TempDir uses the
+// default directory for temporary files (see os.TempDir).
+// Multiple programs calling TempDir simultaneously
+// will not choose the same directory. It is the caller's responsibility
+// to remove the directory when no longer needed.
+func TempDir(fs billy.Dir, dir, prefix string) (name string, err error) {
+	// This implementation is based on stdlib ioutil.TempDir
+
+	if dir == "" {
+		dir = os.TempDir()
+	}
+
+	nconflict := 0
+	for i := 0; i < 10000; i++ {
+		try := filepath.Join(dir, prefix+nextSuffix())
+		err = fs.MkdirAll(try, 0700)
+		if os.IsExist(err) {
+			if nconflict++; nconflict > 10 {
+				randmu.Lock()
+				rand = reseed()
+				randmu.Unlock()
+			}
+			continue
+		}
+		if os.IsNotExist(err) {
+			if _, err := os.Stat(dir); os.IsNotExist(err) {
+				return "", err
+			}
+		}
+		if err == nil {
+			name = try
+		}
+		break
+	}
+	return
+}
+
 type underlying interface {
 	Underlying() billy.Basic
 }

vendor/github.com/go-git/go-git/v5/COMPATIBILITY.md

@@ -12,7 +12,7 @@ is supported by go-git.
 | init                                  | ✔ | Plain init and `--bare` are supported. Flags `--template`, `--separate-git-dir` and `--shared` are not. |
 | clone                                 | ✔ | Plain clone and equivalents to `--progress`,  `--single-branch`, `--depth`, `--origin`, `--recurse-submodules` are supported. Others are not. |
 | **basic snapshotting** |
-| add                                   | ✔ | Plain add is supported. Any other flag aren't supported |
+| add                                   | ✔ | Plain add is supported. Any other flags aren't supported |
 | status                                | ✔ |
 | commit                                | ✔ |
 | reset                                 | ✔ |
@@ -86,7 +86,7 @@ is supported by go-git.
 | for-each-ref                          | ✔ |
 | hash-object                           | ✔ |
 | ls-files                              | ✔ |
-| merge-base                            | |
+| merge-base                            | ✔ | Calculates the merge-base only between two commits, and supports `--independent` and `--is-ancestor` modifiers; Does not support `--fork-point` nor `--octopus` modifiers. |
 | read-tree                             | |
 | rev-list                              | ✔ |
 | rev-parse                             | |
@@ -101,7 +101,7 @@ is supported by go-git.
 | http(s):// (smart)                    | ✔ |
 | git://                                | ✔ |
 | ssh://                                | ✔ |
-| file://                               | ✔ |
+| file://                               | partial | Warning: this is not pure Golang. This shells out to the `git` binary. |
 | custom                                | ✔ |
 | **other features** |
 | gitignore                             | ✔ |

vendor/github.com/go-git/go-git/v5/CONTRIBUTING.md

@@ -5,24 +5,12 @@ contributions via GitHub pull requests.  This document outlines some of the
 conventions on development workflow, commit message formatting, contact points,
 and other resources to make it easier to get your contribution accepted.
 
-## Certificate of Origin
-
-By contributing to this project you agree to the [Developer Certificate of
-Origin (DCO)](DCO). This document was created by the Linux Kernel community and is a
-simple statement that you, as a contributor, have the legal right to make the
-contribution.
-
-In order to show your agreement with the DCO you should include at the end of commit message,
-the following line: `Signed-off-by: John Doe <john.doe@example.com>`, using your real name.
-
-This can be done easily using the [`-s`](https://github.com/git/git/blob/b2c150d3aa82f6583b9aadfecc5f8fa1c74aca09/Documentation/git-commit.txt#L154-L161) flag on the `git commit`.
-
 ## Support Channels
 
 The official support channels, for both users and contributors, are:
 
-- GitHub [issues](https://github.com/src-d/go-git/issues)*
-- Slack: #go-git room in the [source{d} Slack](https://join.slack.com/t/sourced-community/shared_invite/enQtMjc4Njk5MzEyNzM2LTFjNzY4NjEwZGEwMzRiNTM4MzRlMzQ4MmIzZjkwZmZlM2NjODUxZmJjNDI1OTcxNDAyMmZlNmFjODZlNTg0YWM)
+- [StackOverflow go-git tag](https://stackoverflow.com/questions/tagged/go-git) for user questions.
+- GitHub [Issues](https://github.com/src-d/go-git/issues)* for bug reports and feature requests.
 
 *Before opening a new issue or submitting a new pull request, it's helpful to
 search the project - it's likely that another user has already reported the
@@ -41,7 +29,7 @@ In order for a PR to be accepted it needs to pass a list of requirements:
 - They should in general include tests, and those shall pass.
 - If the PR is a bug fix, it has to include a suite of unit tests for the new functionality.
 - If the PR is a new feature, it has to come with a suite of unit tests, that tests the new functionality.
-- In any case, all the PRs have to pass the personal evaluation of at least one of the [maintainers](MAINTAINERS) of go-git.
+- In any case, all the PRs have to pass the personal evaluation of at least one of the maintainers of go-git.
 
 ### Format of the commit message
 

vendor/github.com/go-git/go-git/v5/LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2017 Sourced Technologies, S.L.
+   Copyright 2018 Sourced Technologies, S.L.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
@@ -198,4 +198,4 @@
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
-   limitations under the License.
+   limitations under the License.

vendor/github.com/go-git/go-git/v5/Makefile

@@ -0,0 +1,38 @@
+# General
+WORKDIR = $(PWD)
+
+# Go parameters
+GOCMD = go
+GOTEST = $(GOCMD) test 
+
+# Git config
+GIT_VERSION ?=
+GIT_DIST_PATH ?= $(PWD)/.git-dist
+GIT_REPOSITORY = http://github.com/git/git.git
+
+# Coverage
+COVERAGE_REPORT = coverage.out
+COVERAGE_MODE = count
+
+build-git:
+	@if [ -f $(GIT_DIST_PATH)/git ]; then \
+		echo "nothing to do, using cache $(GIT_DIST_PATH)"; \
+	else \
+		git clone $(GIT_REPOSITORY) -b $(GIT_VERSION) --depth 1 --single-branch $(GIT_DIST_PATH); \
+		cd $(GIT_DIST_PATH); \
+		make configure; \
+		./configure; \
+		make all; \
+	fi
+
+test:
+	@echo "running against `git version`"; \
+	$(GOTEST) ./...
+
+test-coverage:
+	@echo "running against `git version`"; \
+	echo "" > $(COVERAGE_REPORT); \
+	$(GOTEST) -coverprofile=$(COVERAGE_REPORT) -coverpkg=./... -covermode=$(COVERAGE_MODE) ./...
+
+clean:
+	rm -rf $(GIT_DIST_PATH)

vendor/github.com/go-git/go-git/v5/README.md

@@ -1,18 +1,26 @@
 ![go-git logo](https://cdn.rawgit.com/src-d/artwork/02036484/go-git/files/go-git-github-readme-header.png)
-[![GoDoc](https://godoc.org/gopkg.in/src-d/go-git.v4?status.svg)](https://godoc.org/github.com/src-d/go-git) [![Build Status](https://travis-ci.org/src-d/go-git.svg)](https://travis-ci.org/src-d/go-git) [![Build status](https://ci.appveyor.com/api/projects/status/nyidskwifo4py6ub?svg=true)](https://ci.appveyor.com/project/mcuadros/go-git) [![codecov.io](https://codecov.io/github/src-d/go-git/coverage.svg)](https://codecov.io/github/src-d/go-git) [![Go Report Card](https://goreportcard.com/badge/github.com/src-d/go-git)](https://goreportcard.com/report/github.com/src-d/go-git)
+[![GoDoc](https://godoc.org/github.com/go-git/go-git/v5?status.svg)](https://pkg.go.dev/github.com/go-git/go-git/v5) [![Build Status](https://github.com/go-git/go-git/workflows/Test/badge.svg)](https://github.com/go-git/go-git/actions) [![Go Report Card](https://goreportcard.com/badge/github.com/go-git/go-git)](https://goreportcard.com/report/github.com/go-git/go-git)
 
 *go-git* is a highly extensible git implementation library written in **pure Go**.
 
-It can be used to manipulate git repositories at low level *(plumbing)* or high level *(porcelain)*, through an idiomatic Go API. It also supports several type of storage, such as in-memory filesystems, or custom implementations thanks to the [`Storer`](https://godoc.org/gopkg.in/src-d/go-git.v4/plumbing/storer) interface.
+It can be used to manipulate git repositories at low level *(plumbing)* or high level *(porcelain)*, through an idiomatic Go API. It also supports several types of storage, such as in-memory filesystems, or custom implementations, thanks to the [`Storer`](https://pkg.go.dev/github.com/go-git/go-git/v5/plumbing/storer) interface.
+
+It's being actively developed since 2015 and is being used extensively by [Keybase](https://keybase.io/blog/encrypted-git-for-everyone), [Gitea](https://gitea.io/en-us/) or [Pulumi](https://github.com/search?q=org%3Apulumi+go-git&type=Code), and by many other libraries and tools.
+
+Project Status
+--------------
+
+After the legal issues with the [`src-d`](https://github.com/src-d) organization, the lack of update for four months and the requirement to make a hard fork, the project is **now back to normality**.
+
+The project is currently actively maintained by individual contributors, including several of the original authors, but also backed by a new company, [gitsight](https://github.com/gitsight), where `go-git` is a critical component used at scale.
 
-It's being actively develop since 2015 and is being use extensively by [source{d}](https://sourced.tech/) and [Keybase](https://keybase.io/blog/encrypted-git-for-everyone), and by many other libraries and tools.
 
 Comparison with git
 -------------------
 
 *go-git* aims to be fully compatible with [git](https://github.com/git/git), all the *porcelain* operations are implemented to work exactly as *git* does.
 
-*git* is a humongous project with years of development by thousands of contributors, making it challenging for *go-git* implement all the features. You can find a comparison of *go-git* vs *git* in the [compatibility documentation](COMPATIBILITY.md).
+*git* is a humongous project with years of development by thousands of contributors, making it challenging for *go-git* to implement all the features. You can find a comparison of *go-git* vs *git* in the [compatibility documentation](COMPATIBILITY.md).
 
 
 Installation
@@ -20,16 +28,16 @@ Installation
 
 The recommended way to install *go-git* is:
 
-```
-go get -u gopkg.in/src-d/go-git.v4/...
+```go
+import "github.com/go-git/go-git/v5" // with go modules enabled (GO111MODULE=on or outside GOPATH)
+import "github.com/go-git/go-git" // with go modules disabled
 ```
 
-> We use [gopkg.in](http://labix.org/gopkg.in) for having a versioned API, this means that when `go get` clones the package, is the latest tag matching `v4.*` cloned and not the master branch.
 
 Examples
 --------
 
-> Please note that the functions `CheckIfError` and `Info` used in the examples are from the [examples package](https://github.com/src-d/go-git/blob/master/_examples/common.go#L17) just to be used in the examples.
+> Please note that the `CheckIfError` and `Info` functions  used in the examples are from the [examples package](https://github.com/go-git/go-git/blob/master/_examples/common.go#L19) just to be used in the examples.
 
 
 ### Basic example
@@ -38,10 +46,10 @@ A basic example that mimics the standard `git clone` command
 
 ```go
 // Clone the given repository to the given directory
-Info("git clone https://github.com/src-d/go-git")
+Info("git clone https://github.com/go-git/go-git")
 
 _, err := git.PlainClone("/tmp/foo", false, &git.CloneOptions{
-    URL:      "https://github.com/src-d/go-git",
+    URL:      "https://github.com/go-git/go-git",
     Progress: os.Stdout,
 })
 
@@ -63,15 +71,15 @@ Cloning a repository into memory and printing the history of HEAD, just like `gi
 ```go
 // Clones the given repository in memory, creating the remote, the local
 // branches and fetching the objects, exactly as:
-Info("git clone https://github.com/src-d/go-siva")
+Info("git clone https://github.com/go-git/go-billy")
 
 r, err := git.Clone(memory.NewStorage(), nil, &git.CloneOptions{
-    URL: "https://github.com/src-d/go-siva",
+    URL: "https://github.com/go-git/go-billy",
 })
 
 CheckIfError(err)
 
-// Gets the HEAD history from HEAD, just like does:
+// Gets the HEAD history from HEAD, just like this command:
 Info("git log")
 
 // ... retrieves the branch pointed by HEAD
@@ -110,12 +118,12 @@ Date:   Fri Nov 11 13:23:22 2016 +0100
 ...
 ```
 
-You can find this [example](_examples/log/main.go) and many others at the [examples](_examples) folder
+You can find this [example](_examples/log/main.go) and many others in the [examples](_examples) folder.
 
 Contribute
 ----------
 
-[Contributions](https://github.com/src-d/go-git/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) are more than welcome, if you are interested please take a look to
+[Contributions](https://github.com/go-git/go-git/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) are more than welcome, if you are interested please take a look to
 our [Contributing Guidelines](CONTRIBUTING.md).
 
 License

vendor/github.com/go-git/go-git/v5/blame.go

@@ -9,9 +9,9 @@ import (
 	"time"
 	"unicode/utf8"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/object"
-	"gopkg.in/src-d/go-git.v4/utils/diff"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/object"
+	"github.com/go-git/go-git/v5/utils/diff"
 )
 
 // BlameResult represents the result of a Blame operation.
@@ -123,14 +123,25 @@ func newLine(author, text string, date time.Time, hash plumbing.Hash) *Line {
 }
 
 func newLines(contents []string, commits []*object.Commit) ([]*Line, error) {
-	if len(contents) != len(commits) {
-		return nil, errors.New("contents and commits have different length")
+	lcontents := len(contents)
+	lcommits := len(commits)
+
+	if lcontents != lcommits {
+		if lcontents == lcommits-1 && contents[lcontents-1] != "\n" {
+			contents = append(contents, "\n")
+		} else {
+			return nil, errors.New("contents and commits have different length")
+		}
 	}
-	result := make([]*Line, 0, len(contents))
+
+	result := make([]*Line, 0, lcontents)
 	for i := range contents {
-		l := newLine(commits[i].Author.Email, contents[i], commits[i].Author.When, commits[i].Hash)
-		result = append(result, l)
+		result = append(result, newLine(
+			commits[i].Author.Email, contents[i],
+			commits[i].Author.When, commits[i].Hash,
+		))
 	}
+
 	return result, nil
 }
 
@@ -182,7 +193,7 @@ func (b *blame) fillGraphAndData() error {
 		// this first commit.
 		if i == 0 {
 			for j := 0; j < nLines; j++ {
-				b.graph[i][j] = (*object.Commit)(b.revs[i])
+				b.graph[i][j] = b.revs[i]
 			}
 		} else {
 			// if this is not the first commit, then assign to the old
@@ -200,7 +211,7 @@ func (b *blame) sliceGraph(i int) []*object.Commit {
 	fVs := b.graph[i]
 	result := make([]*object.Commit, 0, len(fVs))
 	for _, v := range fVs {
-		c := object.Commit(*v)
+		c := *v
 		result = append(result, &c)
 	}
 	return result
@@ -223,7 +234,7 @@ func (b *blame) assignOrigin(c, p int) {
 				b.graph[c][dl] = b.graph[p][sl]
 			case hunks[h].Type == 1:
 				dl++
-				b.graph[c][dl] = (*object.Commit)(b.revs[c])
+				b.graph[c][dl] = b.revs[c]
 			case hunks[h].Type == -1:
 				sl++
 			default:

vendor/github.com/go-git/go-git/v5/config/branch.go

@@ -3,13 +3,14 @@ package config
 import (
 	"errors"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	format "gopkg.in/src-d/go-git.v4/plumbing/format/config"
+	"github.com/go-git/go-git/v5/plumbing"
+	format "github.com/go-git/go-git/v5/plumbing/format/config"
 )
 
 var (
-	errBranchEmptyName    = errors.New("branch config: empty name")
-	errBranchInvalidMerge = errors.New("branch config: invalid merge")
+	errBranchEmptyName     = errors.New("branch config: empty name")
+	errBranchInvalidMerge  = errors.New("branch config: invalid merge")
+	errBranchInvalidRebase = errors.New("branch config: rebase must be one of 'true' or 'interactive'")
 )
 
 // Branch contains information on the
@@ -21,6 +22,10 @@ type Branch struct {
 	Remote string
 	// Merge is the local refspec for the branch
 	Merge plumbing.ReferenceName
+	// Rebase instead of merge when pulling. Valid values are
+	// "true" and "interactive".  "false" is undocumented and
+	// typically represented by the non-existence of this field
+	Rebase string
 
 	raw *format.Subsection
 }
@@ -35,6 +40,13 @@ func (b *Branch) Validate() error {
 		return errBranchInvalidMerge
 	}
 
+	if b.Rebase != "" &&
+		b.Rebase != "true" &&
+		b.Rebase != "interactive" &&
+		b.Rebase != "false" {
+		return errBranchInvalidRebase
+	}
+
 	return nil
 }
 
@@ -57,6 +69,12 @@ func (b *Branch) marshal() *format.Subsection {
 		b.raw.SetOption(mergeKey, string(b.Merge))
 	}
 
+	if b.Rebase == "" {
+		b.raw.RemoveOption(rebaseKey)
+	} else {
+		b.raw.SetOption(rebaseKey, b.Rebase)
+	}
+
 	return b.raw
 }
 
@@ -66,6 +84,7 @@ func (b *Branch) unmarshal(s *format.Subsection) error {
 	b.Name = b.raw.Name
 	b.Remote = b.raw.Options.Get(remoteSection)
 	b.Merge = plumbing.ReferenceName(b.raw.Options.Get(mergeKey))
+	b.Rebase = b.raw.Options.Get(rebaseKey)
 
 	return b.Validate()
 }

vendor/github.com/go-git/go-git/v5/config/config.go

@@ -5,10 +5,16 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
 	"sort"
 	"strconv"
 
-	format "gopkg.in/src-d/go-git.v4/plumbing/format/config"
+	"github.com/go-git/go-git/v5/internal/url"
+	format "github.com/go-git/go-git/v5/plumbing/format/config"
+	"github.com/mitchellh/go-homedir"
 )
 
 const (
@@ -31,8 +37,18 @@ var (
 	ErrRemoteConfigEmptyName = errors.New("remote config: empty name")
 )
 
+// Scope defines the scope of a config file, such as local, global or system.
+type Scope int
+
+// Available ConfigScope's
+const (
+	LocalScope Scope = iota
+	GlobalScope
+	SystemScope
+)
+
 // Config contains the repository configuration
-// ftp://www.kernel.org/pub/software/scm/git/docs/git-config.html#FILES
+// https://www.kernel.org/pub/software/scm/git/docs/git-config.html#FILES
 type Config struct {
 	Core struct {
 		// IsBare if true this repository is assumed to be bare and has no
@@ -40,6 +56,30 @@ type Config struct {
 		IsBare bool
 		// Worktree is the path to the root of the working tree.
 		Worktree string
+		// CommentChar is the character indicating the start of a
+		// comment for commands like commit and tag
+		CommentChar string
+	}
+
+	User struct {
+		// Name is the personal name of the author and the commiter of a commit.
+		Name string
+		// Email is the email of the author and the commiter of a commit.
+		Email string
+	}
+
+	Author struct {
+		// Name is the personal name of the author of a commit.
+		Name string
+		// Email is the email of the author of a commit.
+		Email string
+	}
+
+	Committer struct {
+		// Name is the personal name of the commiter of a commit.
+		Name string
+		// Email is the email of the  the commiter of a commit.
+		Email string
 	}
 
 	Pack struct {
@@ -78,6 +118,77 @@ func NewConfig() *Config {
 	return config
 }
 
+// ReadConfig reads a config file from a io.Reader.
+func ReadConfig(r io.Reader) (*Config, error) {
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, err
+	}
+
+	cfg := NewConfig()
+	if err = cfg.Unmarshal(b); err != nil {
+		return nil, err
+	}
+
+	return cfg, nil
+}
+
+// LoadConfig loads a config file from a given scope. The returned Config,
+// contains exclusively information fom the given scope. If couldn't find a
+// config file to the given scope, a empty one is returned.
+func LoadConfig(scope Scope) (*Config, error) {
+	if scope == LocalScope {
+		return nil, fmt.Errorf("LocalScope should be read from the a ConfigStorer.")
+	}
+
+	files, err := Paths(scope)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, file := range files {
+		f, err := os.Open(file)
+		if err != nil {
+			if os.IsNotExist(err) {
+				continue
+			}
+
+			return nil, err
+		}
+
+		defer f.Close()
+		return ReadConfig(f)
+	}
+
+	return NewConfig(), nil
+}
+
+// Paths returns the config file location for a given scope.
+func Paths(scope Scope) ([]string, error) {
+	var files []string
+	switch scope {
+	case GlobalScope:
+		xdg := os.Getenv("XDG_CONFIG_HOME")
+		if xdg != "" {
+			files = append(files, filepath.Join(xdg, "git/config"))
+		}
+
+		home, err := homedir.Dir()
+		if err != nil {
+			return nil, err
+		}
+
+		files = append(files,
+			filepath.Join(home, ".gitconfig"),
+			filepath.Join(home, ".config/git/config"),
+		)
+	case SystemScope:
+		files = append(files, "/etc/gitconfig")
+	}
+
+	return files, nil
+}
+
 // Validate validates the fields and sets the default values.
 func (c *Config) Validate() error {
 	for name, r := range c.Remotes {
@@ -109,12 +220,19 @@ const (
 	branchSection    = "branch"
 	coreSection      = "core"
 	packSection      = "pack"
+	userSection      = "user"
+	authorSection    = "author"
+	committerSection = "committer"
 	fetchKey         = "fetch"
 	urlKey           = "url"
 	bareKey          = "bare"
 	worktreeKey      = "worktree"
+	commentCharKey   = "commentChar"
 	windowKey        = "window"
 	mergeKey         = "merge"
+	rebaseKey        = "rebase"
+	nameKey          = "name"
+	emailKey         = "email"
 
 	// DefaultPackWindow holds the number of previous objects used to
 	// generate deltas. The value 10 is the same used by git command.
@@ -132,6 +250,7 @@ func (c *Config) Unmarshal(b []byte) error {
 	}
 
 	c.unmarshalCore()
+	c.unmarshalUser()
 	if err := c.unmarshalPack(); err != nil {
 		return err
 	}
@@ -151,6 +270,21 @@ func (c *Config) unmarshalCore() {
 	}
 
 	c.Core.Worktree = s.Options.Get(worktreeKey)
+	c.Core.CommentChar = s.Options.Get(commentCharKey)
+}
+
+func (c *Config) unmarshalUser() {
+	s := c.Raw.Section(userSection)
+	c.User.Name = s.Options.Get(nameKey)
+	c.User.Email = s.Options.Get(emailKey)
+
+	s = c.Raw.Section(authorSection)
+	c.Author.Name = s.Options.Get(nameKey)
+	c.Author.Email = s.Options.Get(emailKey)
+
+	s = c.Raw.Section(committerSection)
+	c.Committer.Name = s.Options.Get(nameKey)
+	c.Committer.Email = s.Options.Get(emailKey)
 }
 
 func (c *Config) unmarshalPack() error {
@@ -213,6 +347,7 @@ func (c *Config) unmarshalBranches() error {
 // Marshal returns Config encoded as a git-config file.
 func (c *Config) Marshal() ([]byte, error) {
 	c.marshalCore()
+	c.marshalUser()
 	c.marshalPack()
 	c.marshalRemotes()
 	c.marshalSubmodules()
@@ -235,6 +370,35 @@ func (c *Config) marshalCore() {
 	}
 }
 
+func (c *Config) marshalUser() {
+	s := c.Raw.Section(userSection)
+	if c.User.Name != "" {
+		s.SetOption(nameKey, c.User.Name)
+	}
+
+	if c.User.Email != "" {
+		s.SetOption(emailKey, c.User.Email)
+	}
+
+	s = c.Raw.Section(authorSection)
+	if c.Author.Name != "" {
+		s.SetOption(nameKey, c.Author.Name)
+	}
+
+	if c.Author.Email != "" {
+		s.SetOption(emailKey, c.Author.Email)
+	}
+
+	s = c.Raw.Section(committerSection)
+	if c.Committer.Name != "" {
+		s.SetOption(nameKey, c.Committer.Name)
+	}
+
+	if c.Committer.Email != "" {
+		s.SetOption(emailKey, c.Committer.Email)
+	}
+}
+
 func (c *Config) marshalPack() {
 	s := c.Raw.Section(packSection)
 	if c.Pack.Window != DefaultPackWindow {
@@ -394,3 +558,7 @@ func (c *RemoteConfig) marshal() *format.Subsection {
 
 	return c.raw
 }
+
+func (c *RemoteConfig) IsFirstURLLocal() bool {
+	return url.IsLocalEndpoint(c.URLs[0])
+}

vendor/github.com/go-git/go-git/v5/config/modules.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"regexp"
 
-	format "gopkg.in/src-d/go-git.v4/plumbing/format/config"
+	format "github.com/go-git/go-git/v5/plumbing/format/config"
 )
 
 var (

vendor/github.com/go-git/go-git/v5/config/refspec.go

@@ -4,7 +4,7 @@ import (
 	"errors"
 	"strings"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 const (
@@ -15,17 +15,17 @@ const (
 
 var (
 	ErrRefSpecMalformedSeparator = errors.New("malformed refspec, separators are wrong")
-	ErrRefSpecMalformedWildcard  = errors.New("malformed refspec, missmatched number of wildcards")
+	ErrRefSpecMalformedWildcard  = errors.New("malformed refspec, mismatched number of wildcards")
 )
 
-// RefSpec is a mapping from local branches to remote references
+// RefSpec is a mapping from local branches to remote references.
 // The format of the refspec is an optional +, followed by <src>:<dst>, where
 // <src> is the pattern for references on the remote side and <dst> is where
 // those references will be written locally. The + tells Git to update the
 // reference even if it isn’t a fast-forward.
 // eg.: "+refs/heads/*:refs/remotes/origin/*"
 //
-// https://git-scm.com/book/es/v2/Git-Internals-The-Refspec
+// https://git-scm.com/book/en/v2/Git-Internals-The-Refspec
 type RefSpec string
 
 // Validate validates the RefSpec
@@ -59,6 +59,11 @@ func (s RefSpec) IsDelete() bool {
 	return s[0] == refSpecSeparator[0]
 }
 
+// IsExactSHA1 returns true if the source is a SHA1 hash.
+func (s RefSpec) IsExactSHA1() bool {
+	return plumbing.IsHash(s.Src())
+}
+
 // Src return the src side.
 func (s RefSpec) Src() string {
 	spec := string(s)
@@ -69,8 +74,8 @@ func (s RefSpec) Src() string {
 	} else {
 		start = 0
 	}
-	end := strings.Index(spec, refSpecSeparator)
 
+	end := strings.Index(spec, refSpecSeparator)
 	return spec[start:end]
 }
 
@@ -99,11 +104,11 @@ func (s RefSpec) matchGlob(n plumbing.ReferenceName) bool {
 
 	var prefix, suffix string
 	prefix = src[0:wildcard]
-	if len(src) < wildcard {
-		suffix = src[wildcard+1 : len(suffix)]
+	if len(src) > wildcard+1 {
+		suffix = src[wildcard+1:]
 	}
 
-	return len(name) > len(prefix)+len(suffix) &&
+	return len(name) >= len(prefix)+len(suffix) &&
 		strings.HasPrefix(name, prefix) &&
 		strings.HasSuffix(name, suffix)
 }
@@ -127,6 +132,13 @@ func (s RefSpec) Dst(n plumbing.ReferenceName) plumbing.ReferenceName {
 	return plumbing.ReferenceName(dst[0:wd] + match + dst[wd+1:])
 }
 
+func (s RefSpec) Reverse() RefSpec {
+	spec := string(s)
+	separator := strings.Index(spec, refSpecSeparator)
+
+	return RefSpec(spec[separator+1:] + refSpecSeparator + spec[:separator])
+}
+
 func (s RefSpec) String() string {
 	return string(s)
 }

vendor/github.com/go-git/go-git/v5/doc.go

@@ -7,4 +7,4 @@
 // It is highly extensible, we have been following the open/close principle in
 // its design to facilitate extensions, mainly focusing the efforts on the
 // persistence of the objects.
-package git // import "gopkg.in/src-d/go-git.v4"
+package git

vendor/github.com/go-git/go-git/v5/go.mod

@@ -0,0 +1,28 @@
+module github.com/go-git/go-git/v5
+
+require (
+	github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 // indirect
+	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
+	github.com/emirpasic/gods v1.12.0
+	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
+	github.com/gliderlabs/ssh v0.2.2
+	github.com/go-git/gcfg v1.5.0
+	github.com/go-git/go-billy/v5 v5.0.0
+	github.com/go-git/go-git-fixtures/v4 v4.0.1
+	github.com/google/go-cmp v0.3.0
+	github.com/imdario/mergo v0.3.9
+	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99
+	github.com/jessevdk/go-flags v1.4.0
+	github.com/kevinburke/ssh_config v0.0.0-20190725054713-01f96b0aa0cd
+	github.com/mitchellh/go-homedir v1.1.0
+	github.com/pkg/errors v0.8.1 // indirect
+	github.com/sergi/go-diff v1.1.0
+	github.com/xanzy/ssh-agent v0.2.1
+	golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073
+	golang.org/x/net v0.0.0-20200301022130-244492dfa37a
+	golang.org/x/text v0.3.2
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f
+	gopkg.in/warnings.v0 v0.1.2 // indirect
+)
+
+go 1.13

vendor/github.com/go-git/go-git/v5/go.sum

@@ -0,0 +1,80 @@
+github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7 h1:uSoVVbwJiQipAclBbw+8quDsfcvFjOpI5iCf4p/cqCs=
+github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs=
+github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 h1:kFOfPq6dUM1hTo4JG6LR5AXSUEsOjtdm0kw0FtQtMJA=
+github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
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vendor/github.com/go-git/go-git/v5/internal/revision/parser.go

@@ -1,5 +1,5 @@
 // Package revision extracts git revision from string
-// More informations about revision : https://www.kernel.org/pub/software/scm/git/docs/gitrevisions.html
+// More information about revision : https://www.kernel.org/pub/software/scm/git/docs/gitrevisions.html
 package revision
 
 import (

vendor/github.com/go-git/go-git/v5/internal/revision/scanner.go

@@ -10,7 +10,7 @@ import (
 // validates it belongs to a rune category
 type runeCategoryValidator func(r rune) bool
 
-// tokenizeExpression aggegates a series of runes matching check predicate into a single
+// tokenizeExpression aggregates a series of runes matching check predicate into a single
 // string and provides given tokenType as token type
 func tokenizeExpression(ch rune, tokenType token, check runeCategoryValidator, r *bufio.Reader) (token, string, error) {
 	var data []rune

vendor/github.com/go-git/go-git/v5/internal/url/url.go

@@ -0,0 +1,37 @@
+package url
+
+import (
+	"regexp"
+)
+
+var (
+	isSchemeRegExp   = regexp.MustCompile(`^[^:]+://`)
+	scpLikeUrlRegExp = regexp.MustCompile(`^(?:(?P<user>[^@]+)@)?(?P<host>[^:\s]+):(?:(?P<port>[0-9]{1,5})(?:\/|:))?(?P<path>[^\\].*\/[^\\].*)$`)
+)
+
+// MatchesScheme returns true if the given string matches a URL-like
+// format scheme.
+func MatchesScheme(url string) bool {
+	return isSchemeRegExp.MatchString(url)
+}
+
+// MatchesScpLike returns true if the given string matches an SCP-like
+// format scheme.
+func MatchesScpLike(url string) bool {
+	return scpLikeUrlRegExp.MatchString(url)
+}
+
+// FindScpLikeComponents returns the user, host, port and path of the
+// given SCP-like URL.
+func FindScpLikeComponents(url string) (user, host, port, path string) {
+	m := scpLikeUrlRegExp.FindStringSubmatch(url)
+	return m[1], m[2], m[3], m[4]
+}
+
+// IsLocalEndpoint returns true if the given URL string specifies a
+// local file endpoint.  For example, on a Linux machine,
+// `/home/user/src/go-git` would match as a local endpoint, but
+// `https://github.com/src-d/go-git` would not.
+func IsLocalEndpoint(url string) bool {
+	return !MatchesScheme(url) && !MatchesScpLike(url)
+}

vendor/github.com/go-git/go-git/v5/object_walker.go

@@ -3,10 +3,10 @@ package git
 import (
 	"fmt"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/filemode"
-	"gopkg.in/src-d/go-git.v4/plumbing/object"
-	"gopkg.in/src-d/go-git.v4/storage"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/filemode"
+	"github.com/go-git/go-git/v5/plumbing/object"
+	"github.com/go-git/go-git/v5/storage"
 )
 
 type objectWalker struct {
@@ -21,7 +21,7 @@ func newObjectWalker(s storage.Storer) *objectWalker {
 	return &objectWalker{s, map[plumbing.Hash]struct{}{}}
 }
 
-// walkAllRefs walks all (hash) refererences from the repo.
+// walkAllRefs walks all (hash) references from the repo.
 func (p *objectWalker) walkAllRefs() error {
 	// Walk over all the references in the repo.
 	it, err := p.Storer.IterReferences()
@@ -94,6 +94,8 @@ func (p *objectWalker) walkObjectTree(hash plumbing.Hash) error {
 				return err
 			}
 		}
+	case *object.Tag:
+		return p.walkObjectTree(obj.Target)
 	default:
 		// Error out on unhandled object types.
 		return fmt.Errorf("Unknown object %X %s %T\n", obj.ID(), obj.Type(), obj)

vendor/github.com/go-git/go-git/v5/options.go

@@ -3,13 +3,15 @@ package git
 import (
 	"errors"
 	"regexp"
+	"strings"
+	"time"
 
+	"github.com/go-git/go-git/v5/config"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/object"
+	"github.com/go-git/go-git/v5/plumbing/protocol/packp/sideband"
+	"github.com/go-git/go-git/v5/plumbing/transport"
 	"golang.org/x/crypto/openpgp"
-	"gopkg.in/src-d/go-git.v4/config"
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/object"
-	"gopkg.in/src-d/go-git.v4/plumbing/protocol/packp/sideband"
-	"gopkg.in/src-d/go-git.v4/plumbing/transport"
 )
 
 // SubmoduleRescursivity defines how depth will affect any submodule recursive
@@ -185,6 +187,12 @@ type PushOptions struct {
 	// Progress is where the human readable information sent by the server is
 	// stored, if nil nothing is stored.
 	Progress sideband.Progress
+	// Prune specify that remote refs that match given RefSpecs and that do
+	// not exist locally will be removed.
+	Prune bool
+	// Force allows the push to update a remote branch even when the local
+	// branch does not descend from it.
+	Force bool
 }
 
 // Validate validates the fields and sets the default values.
@@ -228,10 +236,11 @@ var (
 	ErrCreateRequiresBranch = errors.New("Branch is mandatory when Create is used")
 )
 
-// CheckoutOptions describes how a checkout 31operation should be performed.
+// CheckoutOptions describes how a checkout operation should be performed.
 type CheckoutOptions struct {
-	// Hash to be checked out, if used HEAD will in detached mode. Branch and
-	// Hash are mutually exclusive, if Create is not used.
+	// Hash is the hash of the commit to be checked out. If used, HEAD will be
+	// in detached mode. If Create is not used, Branch and Hash are mutually
+	// exclusive.
 	Hash plumbing.Hash
 	// Branch to be checked out, if Branch and Hash are empty is set to `master`.
 	Branch plumbing.ReferenceName
@@ -240,6 +249,11 @@ type CheckoutOptions struct {
 	// Force, if true when switching branches, proceed even if the index or the
 	// working tree differs from HEAD. This is used to throw away local changes
 	Force bool
+	// Keep, if true when switching branches, local changes (the index or the
+	// working tree changes) will be kept so that they can be committed to the
+	// target branch. Force and Keep are mutually exclusive, should not be both
+	// set to true.
+	Keep bool
 }
 
 // Validate validates the fields and sets the default values.
@@ -286,7 +300,7 @@ const (
 
 // ResetOptions describes how a reset operation should be performed.
 type ResetOptions struct {
-	// Commit, if commit is pressent set the current branch head (HEAD) to it.
+	// Commit, if commit is present set the current branch head (HEAD) to it.
 	Commit plumbing.Hash
 	// Mode, form resets the current branch head to Commit and possibly updates
 	// the index (resetting it to the tree of Commit) and the working tree
@@ -329,6 +343,30 @@ type LogOptions struct {
 	// set Order=LogOrderCommitterTime for ordering by committer time (more compatible with `git log`)
 	// set Order=LogOrderBSF for Breadth-first search
 	Order LogOrder
+
+	// Show only those commits in which the specified file was inserted/updated.
+	// It is equivalent to running `git log -- <file-name>`.
+	// this field is kept for compatility, it can be replaced with PathFilter
+	FileName *string
+
+	// Filter commits based on the path of files that are updated
+	// takes file path as argument and should return true if the file is desired
+	// It can be used to implement `git log -- <path>`
+	// either <path> is a file path, or directory path, or a regexp of file/directory path
+	PathFilter func(string) bool
+
+	// Pretend as if all the refs in refs/, along with HEAD, are listed on the command line as <commit>.
+	// It is equivalent to running `git log --all`.
+	// If set on true, the From option will be ignored.
+	All bool
+
+	// Show commits more recent than a specific date.
+	// It is equivalent to running `git log --since <date>` or `git log --after <date>`.
+	Since *time.Time
+
+	// Show commits older than a specific date.
+	// It is equivalent to running `git log --until <date>` or `git log --before <date>`.
+	Until *time.Time
 }
 
 var (
@@ -340,7 +378,8 @@ type CommitOptions struct {
 	// All automatically stage files that have been modified and deleted, but
 	// new files you have not told Git about are not affected.
 	All bool
-	// Author is the author's signature of the commit.
+	// Author is the author's signature of the commit. If Author is empty the
+	// Name and Email is read from the config, and time.Now it's used as When.
 	Author *object.Signature
 	// Committer is the committer's signature of the commit. If Committer is
 	// nil the Author signature is used.
@@ -348,15 +387,18 @@ type CommitOptions struct {
 	// Parents are the parents commits for the new commit, by default when
 	// len(Parents) is zero, the hash of HEAD reference is used.
 	Parents []plumbing.Hash
-	// A key to sign the commit with. A nil value here means the commit will not
-	// be signed. The private key must be present and already decrypted.
+	// SignKey denotes a key to sign the commit with. A nil value here means the
+	// commit will not be signed. The private key must be present and already
+	// decrypted.
 	SignKey *openpgp.Entity
 }
 
 // Validate validates the fields and sets the default values.
 func (o *CommitOptions) Validate(r *Repository) error {
 	if o.Author == nil {
-		return ErrMissingAuthor
+		if err := o.loadConfigAuthorAndCommitter(r); err != nil {
+			return err
+		}
 	}
 
 	if o.Committer == nil {
@@ -377,6 +419,78 @@ func (o *CommitOptions) Validate(r *Repository) error {
 	return nil
 }
 
+func (o *CommitOptions) loadConfigAuthorAndCommitter(r *Repository) error {
+	cfg, err := r.ConfigScoped(config.SystemScope)
+	if err != nil {
+		return err
+	}
+
+	if o.Author == nil && cfg.Author.Email != "" && cfg.Author.Name != "" {
+		o.Author = &object.Signature{
+			Name:  cfg.Author.Name,
+			Email: cfg.Author.Email,
+			When:  time.Now(),
+		}
+	}
+
+	if o.Committer == nil && cfg.Committer.Email != "" && cfg.Committer.Name != "" {
+		o.Committer = &object.Signature{
+			Name:  cfg.Committer.Name,
+			Email: cfg.Committer.Email,
+			When:  time.Now(),
+		}
+	}
+
+	if o.Author == nil && cfg.User.Email != "" && cfg.User.Name != "" {
+		o.Author = &object.Signature{
+			Name:  cfg.User.Name,
+			Email: cfg.User.Email,
+			When:  time.Now(),
+		}
+	}
+
+	if o.Author == nil {
+		return ErrMissingAuthor
+	}
+
+	return nil
+}
+
+var (
+	ErrMissingName    = errors.New("name field is required")
+	ErrMissingTagger  = errors.New("tagger field is required")
+	ErrMissingMessage = errors.New("message field is required")
+)
+
+// CreateTagOptions describes how a tag object should be created.
+type CreateTagOptions struct {
+	// Tagger defines the signature of the tag creator.
+	Tagger *object.Signature
+	// Message defines the annotation of the tag. It is canonicalized during
+	// validation into the format expected by git - no leading whitespace and
+	// ending in a newline.
+	Message string
+	// SignKey denotes a key to sign the tag with. A nil value here means the tag
+	// will not be signed. The private key must be present and already decrypted.
+	SignKey *openpgp.Entity
+}
+
+// Validate validates the fields and sets the default values.
+func (o *CreateTagOptions) Validate(r *Repository, hash plumbing.Hash) error {
+	if o.Tagger == nil {
+		return ErrMissingTagger
+	}
+
+	if o.Message == "" {
+		return ErrMissingMessage
+	}
+
+	// Canonicalize the message into the expected message format.
+	o.Message = strings.TrimSpace(o.Message) + "\n"
+
+	return nil
+}
+
 // ListOptions describes how a remote list should be performed.
 type ListOptions struct {
 	// Auth credentials, if required, to use with the remote repository.

vendor/github.com/go-git/go-git/v5/plumbing/cache/buffer_lru.go

@@ -45,19 +45,23 @@ func (c *BufferLRU) Put(key int64, slice []byte) {
 		c.ll = list.New()
 	}
 
+	bufSize := FileSize(len(slice))
 	if ee, ok := c.cache[key]; ok {
+		oldBuf := ee.Value.(buffer)
+		// in this case bufSize is a delta: new size - old size
+		bufSize -= FileSize(len(oldBuf.Slice))
 		c.ll.MoveToFront(ee)
 		ee.Value = buffer{key, slice}
-		return
+	} else {
+		if bufSize > c.MaxSize {
+			return
+		}
+		ee := c.ll.PushFront(buffer{key, slice})
+		c.cache[key] = ee
 	}
 
-	objSize := FileSize(len(slice))
-
-	if objSize > c.MaxSize {
-		return
-	}
-
-	for c.actualSize+objSize > c.MaxSize {
+	c.actualSize += bufSize
+	for c.actualSize > c.MaxSize {
 		last := c.ll.Back()
 		lastObj := last.Value.(buffer)
 		lastSize := FileSize(len(lastObj.Slice))
@@ -66,10 +70,6 @@ func (c *BufferLRU) Put(key int64, slice []byte) {
 		delete(c.cache, lastObj.Key)
 		c.actualSize -= lastSize
 	}
-
-	ee := c.ll.PushFront(buffer{key, slice})
-	c.cache[key] = ee
-	c.actualSize += objSize
 }
 
 // Get returns a buffer by its key. It marks the buffer as used. If the buffer

vendor/github.com/go-git/go-git/v5/plumbing/cache/common.go

@@ -1,6 +1,6 @@
 package cache
 
-import "gopkg.in/src-d/go-git.v4/plumbing"
+import "github.com/go-git/go-git/v5/plumbing"
 
 const (
 	Byte FileSize = 1 << (iota * 10)

vendor/github.com/go-git/go-git/v5/plumbing/cache/object_lru.go

@@ -4,7 +4,7 @@ import (
 	"container/list"
 	"sync"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 // ObjectLRU implements an object cache with an LRU eviction policy and a
@@ -42,21 +42,30 @@ func (c *ObjectLRU) Put(obj plumbing.EncodedObject) {
 		c.ll = list.New()
 	}
 
+	objSize := FileSize(obj.Size())
 	key := obj.Hash()
 	if ee, ok := c.cache[key]; ok {
+		oldObj := ee.Value.(plumbing.EncodedObject)
+		// in this case objSize is a delta: new size - old size
+		objSize -= FileSize(oldObj.Size())
 		c.ll.MoveToFront(ee)
 		ee.Value = obj
-		return
+	} else {
+		if objSize > c.MaxSize {
+			return
+		}
+		ee := c.ll.PushFront(obj)
+		c.cache[key] = ee
 	}
 
-	objSize := FileSize(obj.Size())
-
-	if objSize > c.MaxSize {
-		return
-	}
-
-	for c.actualSize+objSize > c.MaxSize {
+	c.actualSize += objSize
+	for c.actualSize > c.MaxSize {
 		last := c.ll.Back()
+		if last == nil {
+			c.actualSize = 0
+			break
+		}
+
 		lastObj := last.Value.(plumbing.EncodedObject)
 		lastSize := FileSize(lastObj.Size())
 
@@ -64,10 +73,6 @@ func (c *ObjectLRU) Put(obj plumbing.EncodedObject) {
 		delete(c.cache, lastObj.Hash())
 		c.actualSize -= lastSize
 	}
-
-	ee := c.ll.PushFront(obj)
-	c.cache[key] = ee
-	c.actualSize += objSize
 }
 
 // Get returns an object by its hash. It marks the object as used. If the object

vendor/github.com/go-git/go-git/v5/plumbing/color/color.go

@@ -0,0 +1,38 @@
+package color
+
+// TODO read colors from a github.com/go-git/go-git/plumbing/format/config.Config struct
+// TODO implement color parsing, see https://github.com/git/git/blob/v2.26.2/color.c
+
+// Colors. See https://github.com/git/git/blob/v2.26.2/color.h#L24-L53.
+const (
+	Normal       = ""
+	Reset        = "\033[m"
+	Bold         = "\033[1m"
+	Red          = "\033[31m"
+	Green        = "\033[32m"
+	Yellow       = "\033[33m"
+	Blue         = "\033[34m"
+	Magenta      = "\033[35m"
+	Cyan         = "\033[36m"
+	BoldRed      = "\033[1;31m"
+	BoldGreen    = "\033[1;32m"
+	BoldYellow   = "\033[1;33m"
+	BoldBlue     = "\033[1;34m"
+	BoldMagenta  = "\033[1;35m"
+	BoldCyan     = "\033[1;36m"
+	FaintRed     = "\033[2;31m"
+	FaintGreen   = "\033[2;32m"
+	FaintYellow  = "\033[2;33m"
+	FaintBlue    = "\033[2;34m"
+	FaintMagenta = "\033[2;35m"
+	FaintCyan    = "\033[2;36m"
+	BgRed        = "\033[41m"
+	BgGreen      = "\033[42m"
+	BgYellow     = "\033[43m"
+	BgBlue       = "\033[44m"
+	BgMagenta    = "\033[45m"
+	BgCyan       = "\033[46m"
+	Faint        = "\033[2m"
+	FaintItalic  = "\033[2;3m"
+	Reverse      = "\033[7m"
+)

vendor/github.com/go-git/go-git/v5/plumbing/filemode/filemode.go

@@ -32,10 +32,10 @@ const (
 	Regular FileMode = 0100644
 	// Deprecated represent non-executable files with the group writable
 	// bit set.  This mode was supported by the first versions of git,
-	// but it has been deprecatred nowadays.  This library uses them
+	// but it has been deprecated nowadays.  This library uses them
 	// internally, so you can read old packfiles, but will treat them as
 	// Regulars when interfacing with the outside world.  This is the
-	// standard git behaviuor.
+	// standard git behaviour.
 	Deprecated FileMode = 0100664
 	// Executable represents executable files.
 	Executable FileMode = 0100755
@@ -152,7 +152,7 @@ func (m FileMode) IsRegular() bool {
 }
 
 // IsFile returns if the FileMode represents that of a file, this is,
-// Regular, Deprecated, Excutable or Link.
+// Regular, Deprecated, Executable or Link.
 func (m FileMode) IsFile() bool {
 	return m == Regular ||
 		m == Deprecated ||

vendor/github.com/go-git/go-git/v5/plumbing/format/config/decoder.go

@@ -3,7 +3,7 @@ package config
 import (
 	"io"
 
-	"github.com/src-d/gcfg"
+	"github.com/go-git/gcfg"
 )
 
 // A Decoder reads and decodes config files from an input stream.

vendor/github.com/go-git/go-git/v5/plumbing/format/diff/colorconfig.go

@@ -0,0 +1,97 @@
+package diff
+
+import "github.com/go-git/go-git/v5/plumbing/color"
+
+// A ColorKey is a key into a ColorConfig map and also equal to the key in the
+// diff.color subsection of the config. See
+// https://github.com/git/git/blob/v2.26.2/diff.c#L83-L106.
+type ColorKey string
+
+// ColorKeys.
+const (
+	Context                   ColorKey = "context"
+	Meta                      ColorKey = "meta"
+	Frag                      ColorKey = "frag"
+	Old                       ColorKey = "old"
+	New                       ColorKey = "new"
+	Commit                    ColorKey = "commit"
+	Whitespace                ColorKey = "whitespace"
+	Func                      ColorKey = "func"
+	OldMoved                  ColorKey = "oldMoved"
+	OldMovedAlternative       ColorKey = "oldMovedAlternative"
+	OldMovedDimmed            ColorKey = "oldMovedDimmed"
+	OldMovedAlternativeDimmed ColorKey = "oldMovedAlternativeDimmed"
+	NewMoved                  ColorKey = "newMoved"
+	NewMovedAlternative       ColorKey = "newMovedAlternative"
+	NewMovedDimmed            ColorKey = "newMovedDimmed"
+	NewMovedAlternativeDimmed ColorKey = "newMovedAlternativeDimmed"
+	ContextDimmed             ColorKey = "contextDimmed"
+	OldDimmed                 ColorKey = "oldDimmed"
+	NewDimmed                 ColorKey = "newDimmed"
+	ContextBold               ColorKey = "contextBold"
+	OldBold                   ColorKey = "oldBold"
+	NewBold                   ColorKey = "newBold"
+)
+
+// A ColorConfig is a color configuration. A nil or empty ColorConfig
+// corresponds to no color.
+type ColorConfig map[ColorKey]string
+
+// A ColorConfigOption sets an option on a ColorConfig.
+type ColorConfigOption func(ColorConfig)
+
+// WithColor sets the color for key.
+func WithColor(key ColorKey, color string) ColorConfigOption {
+	return func(cc ColorConfig) {
+		cc[key] = color
+	}
+}
+
+// defaultColorConfig is the default color configuration. See
+// https://github.com/git/git/blob/v2.26.2/diff.c#L57-L81.
+var defaultColorConfig = ColorConfig{
+	Context:                   color.Normal,
+	Meta:                      color.Bold,
+	Frag:                      color.Cyan,
+	Old:                       color.Red,
+	New:                       color.Green,
+	Commit:                    color.Yellow,
+	Whitespace:                color.BgRed,
+	Func:                      color.Normal,
+	OldMoved:                  color.BoldMagenta,
+	OldMovedAlternative:       color.BoldBlue,
+	OldMovedDimmed:            color.Faint,
+	OldMovedAlternativeDimmed: color.FaintItalic,
+	NewMoved:                  color.BoldCyan,
+	NewMovedAlternative:       color.BoldYellow,
+	NewMovedDimmed:            color.Faint,
+	NewMovedAlternativeDimmed: color.FaintItalic,
+	ContextDimmed:             color.Faint,
+	OldDimmed:                 color.FaintRed,
+	NewDimmed:                 color.FaintGreen,
+	ContextBold:               color.Bold,
+	OldBold:                   color.BoldRed,
+	NewBold:                   color.BoldGreen,
+}
+
+// NewColorConfig returns a new ColorConfig.
+func NewColorConfig(options ...ColorConfigOption) ColorConfig {
+	cc := make(ColorConfig)
+	for key, value := range defaultColorConfig {
+		cc[key] = value
+	}
+	for _, option := range options {
+		option(cc)
+	}
+	return cc
+}
+
+// Reset returns the ANSI escape sequence to reset the color with key set from
+// cc. If no color was set then no reset is needed so it returns the empty
+// string.
+func (cc ColorConfig) Reset(key ColorKey) string {
+	if cc[key] == "" {
+		return ""
+	}
+	return color.Reset
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/diff/patch.go

@@ -1,8 +1,8 @@
 package diff
 
 import (
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/filemode"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/filemode"
 )
 
 // Operation defines the operation of a diff item.

vendor/github.com/go-git/go-git/v5/plumbing/format/diff/unified_encoder.go

@@ -0,0 +1,376 @@
+package diff
+
+import (
+	"fmt"
+	"io"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/go-git/go-git/v5/plumbing"
+)
+
+// DefaultContextLines is the default number of context lines.
+const DefaultContextLines = 3
+
+var (
+	splitLinesRegexp = regexp.MustCompile(`[^\n]*(\n|$)`)
+
+	operationChar = map[Operation]byte{
+		Add:    '+',
+		Delete: '-',
+		Equal:  ' ',
+	}
+
+	operationColorKey = map[Operation]ColorKey{
+		Add:    New,
+		Delete: Old,
+		Equal:  Context,
+	}
+)
+
+// UnifiedEncoder encodes an unified diff into the provided Writer. It does not
+// support similarity index for renames or sorting hash representations.
+type UnifiedEncoder struct {
+	io.Writer
+
+	// contextLines is the count of unchanged lines that will appear surrounding
+	// a change.
+	contextLines int
+
+	// colorConfig is the color configuration. The default is no color.
+	color ColorConfig
+}
+
+// NewUnifiedEncoder returns a new UnifiedEncoder that writes to w.
+func NewUnifiedEncoder(w io.Writer, contextLines int) *UnifiedEncoder {
+	return &UnifiedEncoder{
+		Writer:       w,
+		contextLines: contextLines,
+	}
+}
+
+// SetColor sets e's color configuration and returns e.
+func (e *UnifiedEncoder) SetColor(colorConfig ColorConfig) *UnifiedEncoder {
+	e.color = colorConfig
+	return e
+}
+
+// Encode encodes patch.
+func (e *UnifiedEncoder) Encode(patch Patch) error {
+	sb := &strings.Builder{}
+
+	if message := patch.Message(); message != "" {
+		sb.WriteString(message)
+		if !strings.HasSuffix(message, "\n") {
+			sb.WriteByte('\n')
+		}
+	}
+
+	for _, filePatch := range patch.FilePatches() {
+		e.writeFilePatchHeader(sb, filePatch)
+		g := newHunksGenerator(filePatch.Chunks(), e.contextLines)
+		for _, hunk := range g.Generate() {
+			hunk.writeTo(sb, e.color)
+		}
+	}
+
+	_, err := e.Write([]byte(sb.String()))
+	return err
+}
+
+func (e *UnifiedEncoder) writeFilePatchHeader(sb *strings.Builder, filePatch FilePatch) {
+	from, to := filePatch.Files()
+	if from == nil && to == nil {
+		return
+	}
+	isBinary := filePatch.IsBinary()
+
+	var lines []string
+	switch {
+	case from != nil && to != nil:
+		hashEquals := from.Hash() == to.Hash()
+		lines = append(lines,
+			fmt.Sprintf("diff --git a/%s b/%s", from.Path(), to.Path()),
+		)
+		if from.Mode() != to.Mode() {
+			lines = append(lines,
+				fmt.Sprintf("old mode %o", from.Mode()),
+				fmt.Sprintf("new mode %o", to.Mode()),
+			)
+		}
+		if from.Path() != to.Path() {
+			lines = append(lines,
+				fmt.Sprintf("rename from %s", from.Path()),
+				fmt.Sprintf("rename to %s", to.Path()),
+			)
+		}
+		if from.Mode() != to.Mode() && !hashEquals {
+			lines = append(lines,
+				fmt.Sprintf("index %s..%s", from.Hash(), to.Hash()),
+			)
+		} else if !hashEquals {
+			lines = append(lines,
+				fmt.Sprintf("index %s..%s %o", from.Hash(), to.Hash(), from.Mode()),
+			)
+		}
+		if !hashEquals {
+			lines = e.appendPathLines(lines, "a/"+from.Path(), "b/"+to.Path(), isBinary)
+		}
+	case from == nil:
+		lines = append(lines,
+			fmt.Sprintf("diff --git a/%s b/%s", to.Path(), to.Path()),
+			fmt.Sprintf("new file mode %o", to.Mode()),
+			fmt.Sprintf("index %s..%s", plumbing.ZeroHash, to.Hash()),
+		)
+		lines = e.appendPathLines(lines, "/dev/null", "b/"+to.Path(), isBinary)
+	case to == nil:
+		lines = append(lines,
+			fmt.Sprintf("diff --git a/%s b/%s", from.Path(), from.Path()),
+			fmt.Sprintf("deleted file mode %o", from.Mode()),
+			fmt.Sprintf("index %s..%s", from.Hash(), plumbing.ZeroHash),
+		)
+		lines = e.appendPathLines(lines, "a/"+from.Path(), "/dev/null", isBinary)
+	}
+
+	sb.WriteString(e.color[Meta])
+	sb.WriteString(lines[0])
+	for _, line := range lines[1:] {
+		sb.WriteByte('\n')
+		sb.WriteString(line)
+	}
+	sb.WriteString(e.color.Reset(Meta))
+	sb.WriteByte('\n')
+}
+
+func (e *UnifiedEncoder) appendPathLines(lines []string, fromPath, toPath string, isBinary bool) []string {
+	if isBinary {
+		return append(lines,
+			fmt.Sprintf("Binary files %s and %s differ", fromPath, toPath),
+		)
+	}
+	return append(lines,
+		fmt.Sprintf("--- %s", fromPath),
+		fmt.Sprintf("+++ %s", toPath),
+	)
+}
+
+type hunksGenerator struct {
+	fromLine, toLine            int
+	ctxLines                    int
+	chunks                      []Chunk
+	current                     *hunk
+	hunks                       []*hunk
+	beforeContext, afterContext []string
+}
+
+func newHunksGenerator(chunks []Chunk, ctxLines int) *hunksGenerator {
+	return &hunksGenerator{
+		chunks:   chunks,
+		ctxLines: ctxLines,
+	}
+}
+
+func (g *hunksGenerator) Generate() []*hunk {
+	for i, chunk := range g.chunks {
+		lines := splitLines(chunk.Content())
+		nLines := len(lines)
+
+		switch chunk.Type() {
+		case Equal:
+			g.fromLine += nLines
+			g.toLine += nLines
+			g.processEqualsLines(lines, i)
+		case Delete:
+			if nLines != 0 {
+				g.fromLine++
+			}
+
+			g.processHunk(i, chunk.Type())
+			g.fromLine += nLines - 1
+			g.current.AddOp(chunk.Type(), lines...)
+		case Add:
+			if nLines != 0 {
+				g.toLine++
+			}
+			g.processHunk(i, chunk.Type())
+			g.toLine += nLines - 1
+			g.current.AddOp(chunk.Type(), lines...)
+		}
+
+		if i == len(g.chunks)-1 && g.current != nil {
+			g.hunks = append(g.hunks, g.current)
+		}
+	}
+
+	return g.hunks
+}
+
+func (g *hunksGenerator) processHunk(i int, op Operation) {
+	if g.current != nil {
+		return
+	}
+
+	var ctxPrefix string
+	linesBefore := len(g.beforeContext)
+	if linesBefore > g.ctxLines {
+		ctxPrefix = g.beforeContext[linesBefore-g.ctxLines-1]
+		g.beforeContext = g.beforeContext[linesBefore-g.ctxLines:]
+		linesBefore = g.ctxLines
+	}
+
+	g.current = &hunk{ctxPrefix: strings.TrimSuffix(ctxPrefix, "\n")}
+	g.current.AddOp(Equal, g.beforeContext...)
+
+	switch op {
+	case Delete:
+		g.current.fromLine, g.current.toLine =
+			g.addLineNumbers(g.fromLine, g.toLine, linesBefore, i, Add)
+	case Add:
+		g.current.toLine, g.current.fromLine =
+			g.addLineNumbers(g.toLine, g.fromLine, linesBefore, i, Delete)
+	}
+
+	g.beforeContext = nil
+}
+
+// addLineNumbers obtains the line numbers in a new chunk.
+func (g *hunksGenerator) addLineNumbers(la, lb int, linesBefore int, i int, op Operation) (cla, clb int) {
+	cla = la - linesBefore
+	// we need to search for a reference for the next diff
+	switch {
+	case linesBefore != 0 && g.ctxLines != 0:
+		if lb > g.ctxLines {
+			clb = lb - g.ctxLines + 1
+		} else {
+			clb = 1
+		}
+	case g.ctxLines == 0:
+		clb = lb
+	case i != len(g.chunks)-1:
+		next := g.chunks[i+1]
+		if next.Type() == op || next.Type() == Equal {
+			// this diff will be into this chunk
+			clb = lb + 1
+		}
+	}
+
+	return
+}
+
+func (g *hunksGenerator) processEqualsLines(ls []string, i int) {
+	if g.current == nil {
+		g.beforeContext = append(g.beforeContext, ls...)
+		return
+	}
+
+	g.afterContext = append(g.afterContext, ls...)
+	if len(g.afterContext) <= g.ctxLines*2 && i != len(g.chunks)-1 {
+		g.current.AddOp(Equal, g.afterContext...)
+		g.afterContext = nil
+	} else {
+		ctxLines := g.ctxLines
+		if ctxLines > len(g.afterContext) {
+			ctxLines = len(g.afterContext)
+		}
+		g.current.AddOp(Equal, g.afterContext[:ctxLines]...)
+		g.hunks = append(g.hunks, g.current)
+
+		g.current = nil
+		g.beforeContext = g.afterContext[ctxLines:]
+		g.afterContext = nil
+	}
+}
+
+func splitLines(s string) []string {
+	out := splitLinesRegexp.FindAllString(s, -1)
+	if out[len(out)-1] == "" {
+		out = out[:len(out)-1]
+	}
+	return out
+}
+
+type hunk struct {
+	fromLine int
+	toLine   int
+
+	fromCount int
+	toCount   int
+
+	ctxPrefix string
+	ops       []*op
+}
+
+func (h *hunk) writeTo(sb *strings.Builder, color ColorConfig) {
+	sb.WriteString(color[Frag])
+	sb.WriteString("@@ -")
+
+	if h.fromCount == 1 {
+		sb.WriteString(strconv.Itoa(h.fromLine))
+	} else {
+		sb.WriteString(strconv.Itoa(h.fromLine))
+		sb.WriteByte(',')
+		sb.WriteString(strconv.Itoa(h.fromCount))
+	}
+
+	sb.WriteString(" +")
+
+	if h.toCount == 1 {
+		sb.WriteString(strconv.Itoa(h.toLine))
+	} else {
+		sb.WriteString(strconv.Itoa(h.toLine))
+		sb.WriteByte(',')
+		sb.WriteString(strconv.Itoa(h.toCount))
+	}
+
+	sb.WriteString(" @@")
+	sb.WriteString(color.Reset(Frag))
+
+	if h.ctxPrefix != "" {
+		sb.WriteByte(' ')
+		sb.WriteString(color[Func])
+		sb.WriteString(h.ctxPrefix)
+		sb.WriteString(color.Reset(Func))
+	}
+
+	sb.WriteByte('\n')
+
+	for _, op := range h.ops {
+		op.writeTo(sb, color)
+	}
+}
+
+func (h *hunk) AddOp(t Operation, ss ...string) {
+	n := len(ss)
+	switch t {
+	case Add:
+		h.toCount += n
+	case Delete:
+		h.fromCount += n
+	case Equal:
+		h.toCount += n
+		h.fromCount += n
+	}
+
+	for _, s := range ss {
+		h.ops = append(h.ops, &op{s, t})
+	}
+}
+
+type op struct {
+	text string
+	t    Operation
+}
+
+func (o *op) writeTo(sb *strings.Builder, color ColorConfig) {
+	colorKey := operationColorKey[o.t]
+	sb.WriteString(color[colorKey])
+	sb.WriteByte(operationChar[o.t])
+	if strings.HasSuffix(o.text, "\n") {
+		sb.WriteString(strings.TrimSuffix(o.text, "\n"))
+	} else {
+		sb.WriteString(o.text + "\n\\ No newline at end of file")
+	}
+	sb.WriteString(color.Reset(colorKey))
+	sb.WriteByte('\n')
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/gitignore/dir.go

@@ -7,9 +7,9 @@ import (
 	"os/user"
 	"strings"
 
-	"gopkg.in/src-d/go-billy.v4"
-	"gopkg.in/src-d/go-git.v4/plumbing/format/config"
-	gioutil "gopkg.in/src-d/go-git.v4/utils/ioutil"
+	"github.com/go-git/go-billy/v5"
+	"github.com/go-git/go-git/v5/plumbing/format/config"
+	gioutil "github.com/go-git/go-git/v5/utils/ioutil"
 )
 
 const (

vendor/github.com/go-git/go-git/v5/plumbing/format/gitignore/pattern.go

@@ -133,6 +133,9 @@ func (p *pattern) globMatch(path []string, isDir bool) bool {
 				} else if match {
 					matched = true
 					break
+				} else if len(path) == 0 {
+					// if nothing left then fail
+					matched = false
 				}
 			}
 		} else {

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/decoder.go

@@ -6,13 +6,13 @@ import (
 	"errors"
 	"io"
 
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	"github.com/go-git/go-git/v5/utils/binary"
 )
 
 var (
 	// ErrUnsupportedVersion is returned by Decode when the idx file version
 	// is not supported.
-	ErrUnsupportedVersion = errors.New("Unsuported version")
+	ErrUnsupportedVersion = errors.New("Unsupported version")
 	// ErrMalformedIdxFile is returned by Decode when the idx file is corrupted.
 	ErrMalformedIdxFile = errors.New("Malformed IDX file")
 )
@@ -110,10 +110,6 @@ func readObjectNames(idx *MemoryIndex, r io.Reader) error {
 			continue
 		}
 
-		if buckets < 0 {
-			return ErrMalformedIdxFile
-		}
-
 		idx.FanoutMapping[k] = len(idx.Names)
 
 		nameLen := int(buckets * objectIDLength)

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/encoder.go

@@ -5,7 +5,7 @@ import (
 	"hash"
 	"io"
 
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	"github.com/go-git/go-git/v5/utils/binary"
 )
 
 // Encoder writes MemoryIndex structs to an output stream.

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/idxfile.go

@@ -3,9 +3,11 @@ package idxfile
 import (
 	"bytes"
 	"io"
+	"sort"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	encbin "encoding/binary"
+
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 const (
@@ -34,6 +36,9 @@ type Index interface {
 	Count() (int64, error)
 	// Entries returns an iterator to retrieve all index entries.
 	Entries() (EntryIter, error)
+	// EntriesByOffset returns an iterator to retrieve all index entries ordered
+	// by offset.
+	EntriesByOffset() (EntryIter, error)
 }
 
 // MemoryIndex is the in memory representation of an idx file.
@@ -51,7 +56,8 @@ type MemoryIndex struct {
 	PackfileChecksum [20]byte
 	IdxChecksum      [20]byte
 
-	offsetHash map[int64]plumbing.Hash
+	offsetHash       map[int64]plumbing.Hash
+	offsetHashIsFull bool
 }
 
 var _ Index = (*MemoryIndex)(nil)
@@ -117,31 +123,32 @@ func (idx *MemoryIndex) FindOffset(h plumbing.Hash) (int64, error) {
 		return 0, plumbing.ErrObjectNotFound
 	}
 
-	return idx.getOffset(k, i)
+	offset := idx.getOffset(k, i)
+
+	if !idx.offsetHashIsFull {
+		// Save the offset for reverse lookup
+		if idx.offsetHash == nil {
+			idx.offsetHash = make(map[int64]plumbing.Hash)
+		}
+		idx.offsetHash[int64(offset)] = h
+	}
+
+	return int64(offset), nil
 }
 
 const isO64Mask = uint64(1) << 31
 
-func (idx *MemoryIndex) getOffset(firstLevel, secondLevel int) (int64, error) {
+func (idx *MemoryIndex) getOffset(firstLevel, secondLevel int) uint64 {
 	offset := secondLevel << 2
-	buf := bytes.NewBuffer(idx.Offset32[firstLevel][offset : offset+4])
-	ofs, err := binary.ReadUint32(buf)
-	if err != nil {
-		return -1, err
-	}
+	ofs := encbin.BigEndian.Uint32(idx.Offset32[firstLevel][offset : offset+4])
 
 	if (uint64(ofs) & isO64Mask) != 0 {
 		offset := 8 * (uint64(ofs) & ^isO64Mask)
-		buf := bytes.NewBuffer(idx.Offset64[offset : offset+8])
-		n, err := binary.ReadUint64(buf)
-		if err != nil {
-			return -1, err
-		}
-
-		return int64(n), nil
+		n := encbin.BigEndian.Uint64(idx.Offset64[offset : offset+8])
+		return n
 	}
 
-	return int64(ofs), nil
+	return uint64(ofs)
 }
 
 // FindCRC32 implements the Index interface.
@@ -152,25 +159,34 @@ func (idx *MemoryIndex) FindCRC32(h plumbing.Hash) (uint32, error) {
 		return 0, plumbing.ErrObjectNotFound
 	}
 
-	return idx.getCRC32(k, i)
+	return idx.getCRC32(k, i), nil
 }
 
-func (idx *MemoryIndex) getCRC32(firstLevel, secondLevel int) (uint32, error) {
+func (idx *MemoryIndex) getCRC32(firstLevel, secondLevel int) uint32 {
 	offset := secondLevel << 2
-	buf := bytes.NewBuffer(idx.CRC32[firstLevel][offset : offset+4])
-	return binary.ReadUint32(buf)
+	return encbin.BigEndian.Uint32(idx.CRC32[firstLevel][offset : offset+4])
 }
 
 // FindHash implements the Index interface.
 func (idx *MemoryIndex) FindHash(o int64) (plumbing.Hash, error) {
-	// Lazily generate the reverse offset/hash map if required.
-	if idx.offsetHash == nil {
-		if err := idx.genOffsetHash(); err != nil {
-			return plumbing.ZeroHash, err
+	var hash plumbing.Hash
+	var ok bool
+
+	if idx.offsetHash != nil {
+		if hash, ok = idx.offsetHash[o]; ok {
+			return hash, nil
 		}
 	}
 
-	hash, ok := idx.offsetHash[o]
+	// Lazily generate the reverse offset/hash map if required.
+	if !idx.offsetHashIsFull || idx.offsetHash == nil {
+		if err := idx.genOffsetHash(); err != nil {
+			return plumbing.ZeroHash, err
+		}
+
+		hash, ok = idx.offsetHash[o]
+	}
+
 	if !ok {
 		return plumbing.ZeroHash, plumbing.ErrObjectNotFound
 	}
@@ -186,23 +202,21 @@ func (idx *MemoryIndex) genOffsetHash() error {
 	}
 
 	idx.offsetHash = make(map[int64]plumbing.Hash, count)
+	idx.offsetHashIsFull = true
 
-	iter, err := idx.Entries()
-	if err != nil {
-		return err
-	}
-
-	for {
-		entry, err := iter.Next()
-		if err != nil {
-			if err == io.EOF {
-				return nil
-			}
-			return err
+	var hash plumbing.Hash
+	i := uint32(0)
+	for firstLevel, fanoutValue := range idx.Fanout {
+		mappedFirstLevel := idx.FanoutMapping[firstLevel]
+		for secondLevel := uint32(0); i < fanoutValue; i++ {
+			copy(hash[:], idx.Names[mappedFirstLevel][secondLevel*objectIDLength:])
+			offset := int64(idx.getOffset(mappedFirstLevel, int(secondLevel)))
+			idx.offsetHash[offset] = hash
+			secondLevel++
 		}
-
-		idx.offsetHash[int64(entry.Offset)] = entry.Hash
 	}
+
+	return nil
 }
 
 // Count implements the Index interface.
@@ -215,6 +229,36 @@ func (idx *MemoryIndex) Entries() (EntryIter, error) {
 	return &idxfileEntryIter{idx, 0, 0, 0}, nil
 }
 
+// EntriesByOffset implements the Index interface.
+func (idx *MemoryIndex) EntriesByOffset() (EntryIter, error) {
+	count, err := idx.Count()
+	if err != nil {
+		return nil, err
+	}
+
+	iter := &idxfileEntryOffsetIter{
+		entries: make(entriesByOffset, count),
+	}
+
+	entries, err := idx.Entries()
+	if err != nil {
+		return nil, err
+	}
+
+	for pos := 0; int64(pos) < count; pos++ {
+		entry, err := entries.Next()
+		if err != nil {
+			return nil, err
+		}
+
+		iter.entries[pos] = entry
+	}
+
+	sort.Sort(iter.entries)
+
+	return iter, nil
+}
+
 // EntryIter is an iterator that will return the entries in a packfile index.
 type EntryIter interface {
 	// Next returns the next entry in the packfile index.
@@ -241,22 +285,11 @@ func (i *idxfileEntryIter) Next() (*Entry, error) {
 			continue
 		}
 
+		mappedFirstLevel := i.idx.FanoutMapping[i.firstLevel]
 		entry := new(Entry)
-		ofs := i.secondLevel * objectIDLength
-		copy(entry.Hash[:], i.idx.Names[i.idx.FanoutMapping[i.firstLevel]][ofs:])
-
-		pos := i.idx.FanoutMapping[entry.Hash[0]]
-
-		offset, err := i.idx.getOffset(pos, i.secondLevel)
-		if err != nil {
-			return nil, err
-		}
-		entry.Offset = uint64(offset)
-
-		entry.CRC32, err = i.idx.getCRC32(pos, i.secondLevel)
-		if err != nil {
-			return nil, err
-		}
+		copy(entry.Hash[:], i.idx.Names[mappedFirstLevel][i.secondLevel*objectIDLength:])
+		entry.Offset = i.idx.getOffset(mappedFirstLevel, i.secondLevel)
+		entry.CRC32 = i.idx.getCRC32(mappedFirstLevel, i.secondLevel)
 
 		i.secondLevel++
 		i.total++
@@ -276,3 +309,38 @@ type Entry struct {
 	CRC32  uint32
 	Offset uint64
 }
+
+type idxfileEntryOffsetIter struct {
+	entries entriesByOffset
+	pos     int
+}
+
+func (i *idxfileEntryOffsetIter) Next() (*Entry, error) {
+	if i.pos >= len(i.entries) {
+		return nil, io.EOF
+	}
+
+	entry := i.entries[i.pos]
+	i.pos++
+
+	return entry, nil
+}
+
+func (i *idxfileEntryOffsetIter) Close() error {
+	i.pos = len(i.entries) + 1
+	return nil
+}
+
+type entriesByOffset []*Entry
+
+func (o entriesByOffset) Len() int {
+	return len(o)
+}
+
+func (o entriesByOffset) Less(i int, j int) bool {
+	return o[i].Offset < o[j].Offset
+}
+
+func (o entriesByOffset) Swap(i int, j int) {
+	o[i], o[j] = o[j], o[i]
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/idxfile/writer.go

@@ -7,8 +7,8 @@ import (
 	"sort"
 	"sync"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/utils/binary"
 )
 
 // objects implements sort.Interface and uses hash as sorting key.
@@ -147,7 +147,7 @@ func (w *Writer) createIndex() (*MemoryIndex, error) {
 		idx.Offset32[bucket] = append(idx.Offset32[bucket], buf.Bytes()...)
 
 		buf.Truncate(0)
-		binary.WriteUint32(buf, uint32(o.CRC32))
+		binary.WriteUint32(buf, o.CRC32)
 		idx.CRC32[bucket] = append(idx.CRC32[bucket], buf.Bytes()...)
 	}
 

vendor/github.com/go-git/go-git/v5/plumbing/format/index/decoder.go

@@ -1,6 +1,7 @@
 package index
 
 import (
+	"bufio"
 	"bytes"
 	"crypto/sha1"
 	"errors"
@@ -10,8 +11,8 @@ import (
 	"strconv"
 	"time"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/utils/binary"
 )
 
 var (
@@ -21,7 +22,7 @@ var (
 	// ErrMalformedSignature is returned by Decode when the index header file is
 	// malformed
 	ErrMalformedSignature = errors.New("malformed index signature file")
-	// ErrInvalidChecksum is returned by Decode if the SHA1 hash missmatch with
+	// ErrInvalidChecksum is returned by Decode if the SHA1 hash mismatch with
 	// the read content
 	ErrInvalidChecksum = errors.New("invalid checksum")
 
@@ -42,14 +43,17 @@ type Decoder struct {
 	r         io.Reader
 	hash      hash.Hash
 	lastEntry *Entry
+
+	extReader *bufio.Reader
 }
 
 // NewDecoder returns a new decoder that reads from r.
 func NewDecoder(r io.Reader) *Decoder {
 	h := sha1.New()
 	return &Decoder{
-		r:    io.TeeReader(r, h),
-		hash: h,
+		r:         io.TeeReader(r, h),
+		hash:      h,
+		extReader: bufio.NewReader(nil),
 	}
 }
 
@@ -184,11 +188,9 @@ func (d *Decoder) doReadEntryNameV4() (string, error) {
 
 func (d *Decoder) doReadEntryName(len uint16) (string, error) {
 	name := make([]byte, len)
-	if err := binary.Read(d.r, &name); err != nil {
-		return "", err
-	}
+	_, err := io.ReadFull(d.r, name[:])
 
-	return string(name), nil
+	return string(name), err
 }
 
 // Index entries are padded out to the next 8 byte alignment
@@ -261,6 +263,17 @@ func (d *Decoder) readExtension(idx *Index, header []byte) error {
 		if err := d.Decode(idx.ResolveUndo); err != nil {
 			return err
 		}
+	case bytes.Equal(header, endOfIndexEntryExtSignature):
+		r, err := d.getExtensionReader()
+		if err != nil {
+			return err
+		}
+
+		idx.EndOfIndexEntry = &EndOfIndexEntry{}
+		d := &endOfIndexEntryDecoder{r}
+		if err := d.Decode(idx.EndOfIndexEntry); err != nil {
+			return err
+		}
 	default:
 		return errUnknownExtension
 	}
@@ -268,20 +281,21 @@ func (d *Decoder) readExtension(idx *Index, header []byte) error {
 	return nil
 }
 
-func (d *Decoder) getExtensionReader() (io.Reader, error) {
+func (d *Decoder) getExtensionReader() (*bufio.Reader, error) {
 	len, err := binary.ReadUint32(d.r)
 	if err != nil {
 		return nil, err
 	}
 
-	return &io.LimitedReader{R: d.r, N: int64(len)}, nil
+	d.extReader.Reset(&io.LimitedReader{R: d.r, N: int64(len)})
+	return d.extReader, nil
 }
 
 func (d *Decoder) readChecksum(expected []byte, alreadyRead [4]byte) error {
 	var h plumbing.Hash
 	copy(h[:4], alreadyRead[:])
 
-	if err := binary.Read(d.r, h[4:]); err != nil {
+	if _, err := io.ReadFull(d.r, h[4:]); err != nil {
 		return err
 	}
 
@@ -315,7 +329,7 @@ func validateHeader(r io.Reader) (version uint32, err error) {
 }
 
 type treeExtensionDecoder struct {
-	r io.Reader
+	r *bufio.Reader
 }
 
 func (d *treeExtensionDecoder) Decode(t *Tree) error {
@@ -375,16 +389,13 @@ func (d *treeExtensionDecoder) readEntry() (*TreeEntry, error) {
 	}
 
 	e.Trees = i
-
-	if err := binary.Read(d.r, &e.Hash); err != nil {
-		return nil, err
-	}
+	_, err = io.ReadFull(d.r, e.Hash[:])
 
 	return e, nil
 }
 
 type resolveUndoDecoder struct {
-	r io.Reader
+	r *bufio.Reader
 }
 
 func (d *resolveUndoDecoder) Decode(ru *ResolveUndo) error {
@@ -422,7 +433,7 @@ func (d *resolveUndoDecoder) readEntry() (*ResolveUndoEntry, error) {
 
 	for s := range e.Stages {
 		var hash plumbing.Hash
-		if err := binary.Read(d.r, hash[:]); err != nil {
+		if _, err := io.ReadFull(d.r, hash[:]); err != nil {
 			return nil, err
 		}
 
@@ -449,3 +460,18 @@ func (d *resolveUndoDecoder) readStage(e *ResolveUndoEntry, s Stage) error {
 
 	return nil
 }
+
+type endOfIndexEntryDecoder struct {
+	r *bufio.Reader
+}
+
+func (d *endOfIndexEntryDecoder) Decode(e *EndOfIndexEntry) error {
+	var err error
+	e.Offset, err = binary.ReadUint32(d.r)
+	if err != nil {
+		return err
+	}
+
+	_, err = io.ReadFull(d.r, e.Hash[:])
+	return err
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/index/doc.go

@@ -297,5 +297,64 @@
 //        in the previous ewah bitmap.
 //
 //      - One NUL.
-// Source https://www.kernel.org/pub/software/scm/git/docs/technical/index-format.txt
+//
+//   == File System Monitor cache
+//
+//     The file system monitor cache tracks files for which the core.fsmonitor
+//     hook has told us about changes.  The signature for this extension is
+//     { 'F', 'S', 'M', 'N' }.
+//
+//     The extension starts with
+//
+//     - 32-bit version number: the current supported version is 1.
+//
+//     - 64-bit time: the extension data reflects all changes through the given
+//       time which is stored as the nanoseconds elapsed since midnight,
+//       January 1, 1970.
+//
+//    - 32-bit bitmap size: the size of the CE_FSMONITOR_VALID bitmap.
+//
+//    - An ewah bitmap, the n-th bit indicates whether the n-th index entry
+//      is not CE_FSMONITOR_VALID.
+//
+//  == End of Index Entry
+//
+//    The End of Index Entry (EOIE) is used to locate the end of the variable
+//    length index entries and the beginning of the extensions. Code can take
+//    advantage of this to quickly locate the index extensions without having
+//    to parse through all of the index entries.
+//
+//    Because it must be able to be loaded before the variable length cache
+//    entries and other index extensions, this extension must be written last.
+//    The signature for this extension is { 'E', 'O', 'I', 'E' }.
+//
+//    The extension consists of:
+//
+//    - 32-bit offset to the end of the index entries
+//
+//    - 160-bit SHA-1 over the extension types and their sizes (but not
+//      their contents).  E.g. if we have "TREE" extension that is N-bytes
+//      long, "REUC" extension that is M-bytes long, followed by "EOIE",
+//      then the hash would be:
+//
+//      SHA-1("TREE" + <binary representation of N> +
+//        "REUC" + <binary representation of M>)
+//
+//  == Index Entry Offset Table
+//
+//    The Index Entry Offset Table (IEOT) is used to help address the CPU
+//    cost of loading the index by enabling multi-threading the process of
+//    converting cache entries from the on-disk format to the in-memory format.
+//    The signature for this extension is { 'I', 'E', 'O', 'T' }.
+//
+//    The extension consists of:
+//
+//    - 32-bit version (currently 1)
+//
+//    - A number of index offset entries each consisting of:
+//
+//    - 32-bit offset from the beginning of the file to the first cache entry
+//      in this block of entries.
+//
+//    - 32-bit count of cache entries in this blockpackage index
 package index

vendor/github.com/go-git/go-git/v5/plumbing/format/index/encoder.go

@@ -9,7 +9,7 @@ import (
 	"sort"
 	"time"
 
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	"github.com/go-git/go-git/v5/utils/binary"
 )
 
 var (

vendor/github.com/go-git/go-git/v5/plumbing/format/index/index.go

@@ -7,8 +7,8 @@ import (
 	"path/filepath"
 	"time"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/filemode"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/filemode"
 )
 
 var (
@@ -18,9 +18,10 @@ var (
 	// ErrEntryNotFound is returned by Index.Entry, if an entry is not found.
 	ErrEntryNotFound = errors.New("entry not found")
 
-	indexSignature          = []byte{'D', 'I', 'R', 'C'}
-	treeExtSignature        = []byte{'T', 'R', 'E', 'E'}
-	resolveUndoExtSignature = []byte{'R', 'E', 'U', 'C'}
+	indexSignature              = []byte{'D', 'I', 'R', 'C'}
+	treeExtSignature            = []byte{'T', 'R', 'E', 'E'}
+	resolveUndoExtSignature     = []byte{'R', 'E', 'U', 'C'}
+	endOfIndexEntryExtSignature = []byte{'E', 'O', 'I', 'E'}
 )
 
 // Stage during merge
@@ -50,6 +51,8 @@ type Index struct {
 	Cache *Tree
 	// ResolveUndo represents the 'Resolve undo' extension
 	ResolveUndo *ResolveUndo
+	// EndOfIndexEntry represents the 'End of Index Entry' extension
+	EndOfIndexEntry *EndOfIndexEntry
 }
 
 // Add creates a new Entry and returns it. The caller should first check that
@@ -193,3 +196,18 @@ type ResolveUndoEntry struct {
 	Path   string
 	Stages map[Stage]plumbing.Hash
 }
+
+// EndOfIndexEntry is the End of Index Entry (EOIE) is used to locate the end of
+// the variable length index entries and the beginning of the extensions. Code
+// can take advantage of this to quickly locate the index extensions without
+// having to parse through all of the index entries.
+//
+//  Because it must be able to be loaded before the variable length cache
+//  entries and other index extensions, this extension must be written last.
+type EndOfIndexEntry struct {
+	// Offset to the end of the index entries
+	Offset uint32
+	// Hash is a SHA-1 over the extension types and their sizes (but not
+	//	their contents).
+	Hash plumbing.Hash
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/objfile/reader.go

@@ -6,8 +6,8 @@ import (
 	"io"
 	"strconv"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/format/packfile"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/format/packfile"
 )
 
 var (

vendor/github.com/go-git/go-git/v5/plumbing/format/objfile/writer.go

@@ -6,7 +6,7 @@ import (
 	"io"
 	"strconv"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
+	"github.com/go-git/go-git/v5/plumbing"
 )
 
 var (

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/common.go

@@ -2,11 +2,12 @@ package packfile
 
 import (
 	"bytes"
+	"compress/zlib"
 	"io"
 	"sync"
 
-	"gopkg.in/src-d/go-git.v4/plumbing/storer"
-	"gopkg.in/src-d/go-git.v4/utils/ioutil"
+	"github.com/go-git/go-git/v5/plumbing/storer"
+	"github.com/go-git/go-git/v5/utils/ioutil"
 )
 
 var signature = []byte{'P', 'A', 'C', 'K'}
@@ -51,7 +52,13 @@ func WritePackfileToObjectStorage(
 	}
 
 	defer ioutil.CheckClose(w, &err)
-	_, err = io.Copy(w, packfile)
+
+	var n int64
+	n, err = io.Copy(w, packfile)
+	if err == nil && n == 0 {
+		return ErrEmptyPackfile
+	}
+
 	return err
 }
 
@@ -60,3 +67,12 @@ var bufPool = sync.Pool{
 		return bytes.NewBuffer(nil)
 	},
 }
+
+var zlibInitBytes = []byte{0x78, 0x9c, 0x01, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x01}
+
+var zlibReaderPool = sync.Pool{
+	New: func() interface{} {
+		r, _ := zlib.NewReader(bytes.NewReader(zlibInitBytes))
+		return r
+	},
+}

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/delta_selector.go

@@ -4,8 +4,8 @@ import (
 	"sort"
 	"sync"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/storer"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/storer"
 )
 
 const (

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/diff_delta.go

@@ -3,7 +3,8 @@ package packfile
 import (
 	"bytes"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/utils/ioutil"
 )
 
 // See https://github.com/jelmer/dulwich/blob/master/dulwich/pack.py and
@@ -27,21 +28,24 @@ func GetDelta(base, target plumbing.EncodedObject) (plumbing.EncodedObject, erro
 	return getDelta(new(deltaIndex), base, target)
 }
 
-func getDelta(index *deltaIndex, base, target plumbing.EncodedObject) (plumbing.EncodedObject, error) {
+func getDelta(index *deltaIndex, base, target plumbing.EncodedObject) (o plumbing.EncodedObject, err error) {
 	br, err := base.Reader()
 	if err != nil {
 		return nil, err
 	}
-	defer br.Close()
+
+	defer ioutil.CheckClose(br, &err)
+
 	tr, err := target.Reader()
 	if err != nil {
 		return nil, err
 	}
-	defer tr.Close()
+
+	defer ioutil.CheckClose(tr, &err)
 
 	bb := bufPool.Get().(*bytes.Buffer)
-	bb.Reset()
 	defer bufPool.Put(bb)
+	bb.Reset()
 
 	_, err = bb.ReadFrom(br)
 	if err != nil {
@@ -49,8 +53,8 @@ func getDelta(index *deltaIndex, base, target plumbing.EncodedObject) (plumbing.
 	}
 
 	tb := bufPool.Get().(*bytes.Buffer)
-	tb.Reset()
 	defer bufPool.Put(tb)
+	tb.Reset()
 
 	_, err = tb.ReadFrom(tr)
 	if err != nil {
@@ -77,6 +81,7 @@ func DiffDelta(src, tgt []byte) []byte {
 
 func diffDelta(index *deltaIndex, src []byte, tgt []byte) []byte {
 	buf := bufPool.Get().(*bytes.Buffer)
+	defer bufPool.Put(buf)
 	buf.Reset()
 	buf.Write(deltaEncodeSize(len(src)))
 	buf.Write(deltaEncodeSize(len(tgt)))
@@ -86,6 +91,7 @@ func diffDelta(index *deltaIndex, src []byte, tgt []byte) []byte {
 	}
 
 	ibuf := bufPool.Get().(*bytes.Buffer)
+	defer bufPool.Put(ibuf)
 	ibuf.Reset()
 	for i := 0; i < len(tgt); i++ {
 		offset, l := index.findMatch(src, tgt, i)
@@ -127,12 +133,9 @@ func diffDelta(index *deltaIndex, src []byte, tgt []byte) []byte {
 	}
 
 	encodeInsertOperation(ibuf, buf)
-	bytes := buf.Bytes()
 
-	bufPool.Put(buf)
-	bufPool.Put(ibuf)
-
-	return bytes
+	// buf.Bytes() is only valid until the next modifying operation on the buffer. Copy it.
+	return append([]byte{}, buf.Bytes()...)
 }
 
 func encodeInsertOperation(ibuf, buf *bytes.Buffer) {

vendor/github.com/go-git/go-git/v5/plumbing/format/packfile/encoder.go

@@ -6,9 +6,10 @@ import (
 	"fmt"
 	"io"
 
-	"gopkg.in/src-d/go-git.v4/plumbing"
-	"gopkg.in/src-d/go-git.v4/plumbing/storer"
-	"gopkg.in/src-d/go-git.v4/utils/binary"
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/storer"
+	"github.com/go-git/go-git/v5/utils/binary"
+	"github.com/go-git/go-git/v5/utils/ioutil"
 )
 
 // Encoder gets the data from the storage and write it into the writer in PACK
@@ -80,7 +81,7 @@ func (e *Encoder) head(numEntries int) error {
 	)
 }
 
-func (e *Encoder) entry(o *ObjectToPack) error {
+func (e *Encoder) entry(o *ObjectToPack) (err error) {
 	if o.WantWrite() {
 		// A cycle exists in this delta chain. This should only occur if a
 		// selected object representation disappeared during writing
@@ -119,17 +120,22 @@ func (e *Encoder) entry(o *ObjectToPack) error {
 	}
 
 	e.zw.Reset(e.w)
+
+	defer ioutil.CheckClose(e.zw, &err)
+
 	or, err := o.Object.Reader()
 	if err != nil {
 		return err
 	}
 
+	defer ioutil.CheckClose(or, &err)
+
 	_, err = io.Copy(e.zw, or)
 	if err != nil {
 		return err
 	}
 
-	return e.zw.Close()
+	return nil
 }
 
 func (e *Encoder) writeBaseIfDelta(o *ObjectToPack) error {