$ git clone -n https://src.fedoraproject.org/rpms/python-ly.git /var/lib/mock/f45-build-31450-652/root/chroot_tmpdir/scmroot/python-ly
Cloning into '/var/lib/mock/f45-build-31450-652/root/chroot_tmpdir/scmroot/python-ly'...
$ git fetch origin 04ab04f42cc27079999b7cec679b9792f91b4d01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ly
 * [new ref]         04ab04f42cc27079999b7cec679b9792f91b4d01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 04ab04f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild