$ git clone -n https://src.fedoraproject.org/rpms/ballz.git /var/lib/mock/f40-build-1991487-43499/root/chroot_tmpdir/scmroot/ballz
Cloning into '/var/lib/mock/f40-build-1991487-43499/root/chroot_tmpdir/scmroot/ballz'...
$ git fetch origin 02061f2b5b8728100596daaced7a7f463fc9cd4e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ballz
 * [new ref]         02061f2b5b8728100596daaced7a7f463fc9cd4e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 02061f2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild