$ git clone -n https://src.fedoraproject.org/rpms/octave-control.git /var/lib/mock/f45-build-20833-574/root/chroot_tmpdir/scmroot/octave-control
Cloning into '/var/lib/mock/f45-build-20833-574/root/chroot_tmpdir/scmroot/octave-control'...
$ git fetch origin e97c0a52264354b7e63db4a7dbcd02684a223778:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-control
 * [new ref]         e97c0a52264354b7e63db4a7dbcd02684a223778 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e97c0a5 update to 4.2.3