$ git clone -n https://src.fedoraproject.org/rpms/sirocco.git /var/lib/mock/f40-build-794280-139514/root/chroot_tmpdir/scmroot/sirocco
Cloning into '/var/lib/mock/f40-build-794280-139514/root/chroot_tmpdir/scmroot/sirocco'...
$ git fetch origin 4134e79ab4ffe1eec9602b510a3c3943a6d67204:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sirocco
 * [new ref]         4134e79ab4ffe1eec9602b510a3c3943a6d67204 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4134e79 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild