$ git clone -n https://src.fedoraproject.org/rpms/octave-optim.git /var/lib/mock/f40-build-1938640-25157/root/chroot_tmpdir/scmroot/octave-optim
Cloning into '/var/lib/mock/f40-build-1938640-25157/root/chroot_tmpdir/scmroot/octave-optim'...
$ git fetch origin f3b6c42fd041637d13ec1c65ca358cca3d43af3b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-optim
 * [new ref]         f3b6c42fd041637d13ec1c65ca358cca3d43af3b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3b6c42 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild