$ git clone -n https://src.fedoraproject.org/rpms/python-mako.git /var/lib/mock/f45-build-31457-652/root/chroot_tmpdir/scmroot/python-mako
Cloning into '/var/lib/mock/f45-build-31457-652/root/chroot_tmpdir/scmroot/python-mako'...
$ git fetch origin d935ded54cbcbd845640ed29ff7cf136268feca3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mako
 * [new ref]         d935ded54cbcbd845640ed29ff7cf136268feca3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d935ded Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild