$ git clone -n https://src.fedoraproject.org/rpms/golang-github-task.git /var/lib/mock/f41-build-858559-168455/root/chroot_tmpdir/scmroot/golang-github-task
Cloning into '/var/lib/mock/f41-build-858559-168455/root/chroot_tmpdir/scmroot/golang-github-task'...
$ git fetch origin 4d92a52d4b845a0c94a610ccbe2c6fbcb6ef43a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-task
 * [new ref]         4d92a52d4b845a0c94a610ccbe2c6fbcb6ef43a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d92a52 update to v3.39.2, close rhbz#2313508