$ git clone -n https://src.fedoraproject.org/rpms/FlightGear.git /var/lib/mock/f40-build-801183-143731/root/chroot_tmpdir/scmroot/FlightGear
Cloning into '/var/lib/mock/f40-build-801183-143731/root/chroot_tmpdir/scmroot/FlightGear'...
$ git fetch origin 3ffffc667d5e14e69eae080929674f933f8acb83:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/FlightGear
 * [new ref]         3ffffc667d5e14e69eae080929674f933f8acb83 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ffffc6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild