$ git clone -n https://src.fedoraproject.org/rpms/octave-io.git /var/lib/mock/f45-build-20870-574/root/chroot_tmpdir/scmroot/octave-io
Cloning into '/var/lib/mock/f45-build-20870-574/root/chroot_tmpdir/scmroot/octave-io'...
$ git fetch origin dd4b5b9d05ba39e29da15380792232cefd270aa0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-io
 * [new ref]         dd4b5b9d05ba39e29da15380792232cefd270aa0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd4b5b9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild