$ git clone -n https://src.fedoraproject.org/rpms/golang-x-image.git /var/lib/mock/f45-build-12800-443/root/chroot_tmpdir/scmroot/golang-x-image
Cloning into '/var/lib/mock/f45-build-12800-443/root/chroot_tmpdir/scmroot/golang-x-image'...
$ git fetch origin f176cee00393c55a4f11e5fcdce38d6ce1f51b13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-x-image
 * [new ref]         f176cee00393c55a4f11e5fcdce38d6ce1f51b13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f176cee Update to 0.44.0 upstream release