$ git clone -n https://src.fedoraproject.org/rpms/ibus-bogo.git /var/lib/mock/f40-build-2264173-54554/root/chroot_tmpdir/scmroot/ibus-bogo
Cloning into '/var/lib/mock/f40-build-2264173-54554/root/chroot_tmpdir/scmroot/ibus-bogo'...
$ git fetch origin 8c347c10b678d8d0efa76923db57eb67aa4e42e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibus-bogo
 * [new ref]         8c347c10b678d8d0efa76923db57eb67aa4e42e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c347c1 Orphaned for 6+ weeks