$ git clone -n https://src.fedoraproject.org/rpms/octave-zmat.git /var/lib/mock/f40-build-2068619-49293/root/chroot_tmpdir/scmroot/octave-zmat
Cloning into '/var/lib/mock/f40-build-2068619-49293/root/chroot_tmpdir/scmroot/octave-zmat'...
$ git fetch origin 161a6ff9cb5dd9ecda3bd1f1b87cc9ab5f11c585:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-zmat
 * [new ref]         161a6ff9cb5dd9ecda3bd1f1b87cc9ab5f11c585 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 161a6ff Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild