$ git clone -n https://src.fedoraproject.org/rpms/freeciv.git /var/lib/mock/f40-build-2590268-62606/root/chroot_tmpdir/scmroot/freeciv
Cloning into '/var/lib/mock/f40-build-2590268-62606/root/chroot_tmpdir/scmroot/freeciv'...
$ git fetch origin 84892ca783bb77ae33bec5ca05aa8b84414d8259:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freeciv
 * [new ref]         84892ca783bb77ae33bec5ca05aa8b84414d8259 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84892ca 3.1.0