$ git clone -n https://src.fedoraproject.org/rpms/liborigin.git /var/lib/mock/f40-build-1932841-25125/root/chroot_tmpdir/scmroot/liborigin
Cloning into '/var/lib/mock/f40-build-1932841-25125/root/chroot_tmpdir/scmroot/liborigin'...
$ git fetch origin 6431ef4f1bbc3f481199685a10af4dd1e4b3e8f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/liborigin
 * [new ref]         6431ef4f1bbc3f481199685a10af4dd1e4b3e8f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6431ef4 Update to 3.0.3