$ git clone -n https://src.fedoraproject.org/rpms/python-OBD.git /var/lib/mock/f40-build-2051945-49061/root/chroot_tmpdir/scmroot/python-OBD
Cloning into '/var/lib/mock/f40-build-2051945-49061/root/chroot_tmpdir/scmroot/python-OBD'...
$ git fetch origin ad8b3914506bc7fd6750b88a6826f0561e2d9716:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-OBD
 * [new ref]         ad8b3914506bc7fd6750b88a6826f0561e2d9716 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad8b391 Merge branch 'f38' into f39