$ git clone -n https://src.fedoraproject.org/rpms/genius.git /var/lib/mock/f40-build-793965-139322/root/chroot_tmpdir/scmroot/genius
Cloning into '/var/lib/mock/f40-build-793965-139322/root/chroot_tmpdir/scmroot/genius'...
$ git fetch origin b170c30da3286c90daec66bd9dcae1ca12a3121a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/genius
 * [new ref]         b170c30da3286c90daec66bd9dcae1ca12a3121a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b170c30 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild