$ git clone -n https://src.fedoraproject.org/rpms/fllog.git /var/lib/mock/f45-build-9068-398/root/chroot_tmpdir/scmroot/fllog
Cloning into '/var/lib/mock/f45-build-9068-398/root/chroot_tmpdir/scmroot/fllog'...
$ git fetch origin 77c079d492bfb1d7eccc788e759ef1a862e9bda6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fllog
 * [new ref]         77c079d492bfb1d7eccc788e759ef1a862e9bda6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 77c079d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild