$ git clone -n https://src.fedoraproject.org/rpms/libstaroffice.git /var/lib/mock/f45-build-17048-495/root/chroot_tmpdir/scmroot/libstaroffice
Cloning into '/var/lib/mock/f45-build-17048-495/root/chroot_tmpdir/scmroot/libstaroffice'...
$ git fetch origin 5e8a73163d18b35902166784929499f86f5ae635:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libstaroffice
 * [new ref]         5e8a73163d18b35902166784929499f86f5ae635 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e8a731 Update to a new upstream release