$ git clone -n https://src.fedoraproject.org/rpms/FlightGear-Atlas.git /var/lib/mock/f41-build-2044754-25295/root/chroot_tmpdir/scmroot/FlightGear-Atlas
Cloning into '/var/lib/mock/f41-build-2044754-25295/root/chroot_tmpdir/scmroot/FlightGear-Atlas'...
$ git fetch origin 36608c5cfdb2913487cc98923753c030167be9b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/FlightGear-Atlas
 * [new ref]         36608c5cfdb2913487cc98923753c030167be9b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 36608c5 convert GPLv2+ license to SPDX