Reset the branch name.

1 job for master in 12 seconds (queued for 1 second)
Name Stage Failure
failed
test Test There is an unknown failure, please try again
+ go get -u -f ./cmd/gqgmc ./cmd/gqgmcd
# cd /go/src/gitlab.com/lyda/gqgmc; git pull --ff-only
You are not currently on a branch. Please specify which
branch you want to merge with. See git-pull(1) for details.

git pull <remote> <branch>

package gitlab.com/lyda/gqgmc/cmd/gqgmc: exit status 1
ERROR: Build failed: exit code 1