go build uses wrong VCS information when running in a git worktree #64772
Description
Go version
go version 1.21.5 linux/amd65
What operating system and processor architecture are you using (go env)?
GO111MODULE=''
GOARCH='amd64'
GOBIN=''
GOCACHE='/home/heiko/.cache/go-build'
GOENV='/home/heiko/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFLAGS=''
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMODCACHE='/home/heiko/go/pkg/mod'
GONOPROXY='*.wdf.sap.corp'
GONOSUMDB='*.wdf.sap.corp'
GOOS='linux'
GOPATH='/home/heiko/go'
GOPRIVATE='*.wdf.sap.corp'
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/home/heiko/go/pkg/mod/golang.org/toolchain@v0.0.1-go1.21.5.linux-amd64'
GOSUMDB='sum.golang.org'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/home/heiko/go/pkg/mod/golang.org/toolchain@v0.0.1-go1.21.5.linux-amd64/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.21.5'
GCCGO='gccgo'
GOAMD64='v1'
AR='ar'
CC='gcc'
CXX='g++'
CGO_ENABLED='1'
GOMOD='/home/heiko/d/go/dmarc/go.mod'
GOWORK='/home/heiko/d/go/go.work'
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-build3144831628=/tmp/go-build -gno-record-gcc-switches'What did you do?
git clone ...- local modifications
git worktree add xxx @~# use the previous commitcd xxxgit status# which tells me, that the worktree is cleango build -o out ./...go version -m out/<built-binary>
What did you expect to see?
I expected to see vcs.modified=false and more importantly, I expected to see the commit ID I'm using in the worktree, the one I can see there using git show -s --format=%h.
What did you see instead?
I got vcs.modified=true and the vcs.revision mentions the commit ID of the "parent" folder, which is clearly does not match the output of git describe ... --dirty.
Unfortunately I wasn't able to find the piece of code, which sets the flag, yet.