Remote builds with branches fails

[kolaente]

A build like this fails:

@test "branches" {
  run go run xgo.go --remote https://github.com/rwcarlsen/cyan --branch memprof --targets "linux/amd64" --image="${IMAGEID}" github.com/rwcarlsen/cyan/cmd/cyan
  echo "$output"
  [ "$status" -eq 0 ]
}

With this error:

# /build.sh: line 114: cd: /go/src/github.com/rwcarlsen/cyan/cmd/cyan: No such file or directory

https://github.com/techknowlogick/xgo/actions/runs/11663375631/job/32471664269?pr=259