$ git clone -n https://src.fedoraproject.org/rpms/clusterssh.git /var/lib/mock/f45-build-4500-332/root/chroot_tmpdir/scmroot/clusterssh
Cloning into '/var/lib/mock/f45-build-4500-332/root/chroot_tmpdir/scmroot/clusterssh'...
$ git fetch origin 3aff9bedfe79341915834febded12fdc40120a7e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clusterssh
 * [new ref]         3aff9bedfe79341915834febded12fdc40120a7e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3aff9be Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild