$ git clone -n https://src.fedoraproject.org/rpms/python-paperwork-backend.git /var/lib/mock/f40-build-2222930-52716/root/chroot_tmpdir/scmroot/python-paperwork-backend
Cloning into '/var/lib/mock/f40-build-2222930-52716/root/chroot_tmpdir/scmroot/python-paperwork-backend'...
$ git fetch origin 5ada14f15eb7bbfaf99bbb96cb4d4e5368cf17fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-paperwork-backend
 * [new ref]         5ada14f15eb7bbfaf99bbb96cb4d4e5368cf17fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ada14f libcmis rebuild