$ git clone -n https://src.fedoraproject.org/rpms/python-rpm-generators.git /var/lib/mock/f45-build-310-181/root/chroot_tmpdir/scmroot/python-rpm-generators
Cloning into '/var/lib/mock/f45-build-310-181/root/chroot_tmpdir/scmroot/python-rpm-generators'...
$ git fetch origin 6afe8d52718a25063b5ca5c3dbc887b20f7f651c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-rpm-generators
 * [new ref]         6afe8d52718a25063b5ca5c3dbc887b20f7f651c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6afe8d5 Correctly handle literal '0' values in RpmVersion parts