$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mattn-zglob.git /var/lib/mock/f39-build-1503815-34988/root/chroot_tmpdir/scmroot/golang-github-mattn-zglob
Cloning into '/var/lib/mock/f39-build-1503815-34988/root/chroot_tmpdir/scmroot/golang-github-mattn-zglob'...
$ git fetch origin a390c35f07e7e1b371a74368f85274f0935c4364:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mattn-zglob
 * [new ref]         a390c35f07e7e1b371a74368f85274f0935c4364 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a390c35 update to v0.0.4