$ git clone -n https://src.fedoraproject.org/rpms/octave-quaternion.git /var/lib/mock/f40-build-789708-135960/root/chroot_tmpdir/scmroot/octave-quaternion
Cloning into '/var/lib/mock/f40-build-789708-135960/root/chroot_tmpdir/scmroot/octave-quaternion'...
$ git fetch origin c1048fbbe5fae7f9d10e5a79e669b856c7104e9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-quaternion
 * [new ref]         c1048fbbe5fae7f9d10e5a79e669b856c7104e9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1048fb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild