$ git clone -n https://src.fedoraproject.org/rpms/octave-interval.git /var/lib/mock/f45-build-20845-574/root/chroot_tmpdir/scmroot/octave-interval
Cloning into '/var/lib/mock/f45-build-20845-574/root/chroot_tmpdir/scmroot/octave-interval'...
$ git fetch origin 138b1a9bbfb22dc504efc63ae5db6317ac94426e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-interval
 * [new ref]         138b1a9bbfb22dc504efc63ae5db6317ac94426e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 138b1a9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild