$ git clone -n https://src.fedoraproject.org/rpms/spacenavd.git /var/lib/mock/f41-build-side-1-2670124-29000/root/chroot_tmpdir/scmroot/spacenavd
Cloning into '/var/lib/mock/f41-build-side-1-2670124-29000/root/chroot_tmpdir/scmroot/spacenavd'...
$ git fetch origin d46a4a0a1c013bb7a6e25f103ce8737e072a57d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/spacenavd
 * [new ref]         d46a4a0a1c013bb7a6e25f103ce8737e072a57d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d46a4a0 convert GPLv3+ license to SPDX