$ git clone -n https://src.fedoraproject.org/rpms/octave-mcxlab.git /var/lib/mock/f40-build-2434802-60759/root/chroot_tmpdir/scmroot/octave-mcxlab
Cloning into '/var/lib/mock/f40-build-2434802-60759/root/chroot_tmpdir/scmroot/octave-mcxlab'...
$ git fetch origin be4c06fe95a584108acf356a46f4cc2334d91136:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-mcxlab
 * [new ref]         be4c06fe95a584108acf356a46f4cc2334d91136 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be4c06f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild