$ git clone -n https://src.fedoraproject.org/rpms/ckermit.git /var/lib/mock/f45-build-4426-332/root/chroot_tmpdir/scmroot/ckermit
Cloning into '/var/lib/mock/f45-build-4426-332/root/chroot_tmpdir/scmroot/ckermit'...
$ git fetch origin f82e467ac94cac253e455c4f6b9fea47b08a36ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ckermit
 * [new ref]         f82e467ac94cac253e455c4f6b9fea47b08a36ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f82e467 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild