$ git clone -n https://src.fedoraproject.org/rpms/FlightGear-data.git /var/lib/mock/f40-build-2687122-68084/root/chroot_tmpdir/scmroot/FlightGear-data
Cloning into '/var/lib/mock/f40-build-2687122-68084/root/chroot_tmpdir/scmroot/FlightGear-data'...
$ git fetch origin ab474ee66fcf42d54bd3903405c3bec0d5b76ee6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/FlightGear-data
 * [new ref]         ab474ee66fcf42d54bd3903405c3bec0d5b76ee6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab474ee Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild