$ git clone -n https://src.fedoraproject.org/rpms/supermin.git /var/lib/mock/f41-build-847699-164042/root/chroot_tmpdir/scmroot/supermin
Cloning into '/var/lib/mock/f41-build-847699-164042/root/chroot_tmpdir/scmroot/supermin'...
$ git fetch origin 4a1323f319c0322e63d610af7c054410a201b880:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/supermin
 * [new ref]         4a1323f319c0322e63d610af7c054410a201b880 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a1323f New upstream version 5.3.5