$ git clone -n https://src.fedoraproject.org/rpms/flcluster.git /var/lib/mock/f45-build-9048-398/root/chroot_tmpdir/scmroot/flcluster
Cloning into '/var/lib/mock/f45-build-9048-398/root/chroot_tmpdir/scmroot/flcluster'...
$ git fetch origin fa6fc387faf08ca5279d72119e0947abbe07041d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flcluster
 * [new ref]         fa6fc387faf08ca5279d72119e0947abbe07041d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa6fc38 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild