cmd/go/internal/vcweb/vcstest: TestScripts/git/issue47650.txt failing on systems with older git versions

[Ponewor]

Go version

Latest version on master b18b058

What operating system and processor architecture are you using (go env)?

GOARCH='amd64'
GOBIN=''
GOCACHE='/root/.cache/go-build'
GOENV='/root/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/root/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/root/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/root/go'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/root/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.21.4'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/dev/null'
GOWORK=''
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
PKG_CONFIG='pkg-config'
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build294179835=/tmp/go-build -gno-record-gcc-switches'

What did you do?

Just ran the all.sh script to build.

What did you expect to see?

Successful build

What did you see instead?

--- FAIL: TestScripts (0.40s)
--- FAIL: TestScripts/git/issue47650.txt (0.89s)
vcstest_test.go:155: 2023/12/12 02:12:46 issue47650.txt:
> handle git
> env GIT_AUTHOR_NAME='Bryan C. Mills'
> env GIT_AUTHOR_EMAIL='bcmills@google.com'
> env GIT_COMMITTER_NAME=$GIT_AUTHOR_NAME
> env GIT_COMMITTER_EMAIL=$GIT_AUTHOR_EMAIL
> git init
[stdout]
Initialized empty Git repository in /tmp/TestScripts1179865923/001/git/issue47650/.git/
> at 2021-08-11T13:52:00-04:00
> git add cmd
> git commit -m 'add cmd/issue47650'
[stdout]
[master (root-commit) 4d237df] add cmd/issue47650
1 file changed, 7 insertions(+)
create mode 100644 cmd/issue47650/main.go
> git tag v0.1.0
> git add go.mod
> git commit -m 'add go.mod'
[stdout]
[master 21535ef] add go.mod
1 file changed, 3 insertions(+)
create mode 100644 go.mod
> git show-ref --tags --heads
[stdout]
21535ef346c3e79fd09edd75bd4725f06c828e43 refs/heads/master
4d237df2dbfc8a443af2f5e84be774f08a2aed0c refs/tags/v0.1.0
> cmp stdout .git-refs
diff stdout .git-refs
--- stdout
+++ .git-refs
@@ -1,2 +1,2 @@
-21535ef346c3e79fd09edd75bd4725f06c828e43 refs/heads/master
+21535ef346c3e79fd09edd75bd4725f06c828e43 refs/heads/main
4d237df2dbfc8a443af2f5e84be774f08a2aed0c refs/tags/v0.1.0

    vcstest_test.go:161: issue47650.txt:19: cmp stdout .git-refs: stdout and .git-refs differ

FAIL
FAIL cmd/go/internal/vcweb/vcstest 7.643s

It seems like it's caused by this commit .

[bcmills]

Fixed by https://go.dev/cl/549155.