$ git clone -n https://src.fedoraproject.org/rpms/octave-ncarray.git /var/lib/mock/f41-build-side-1-2969465-35819/root/chroot_tmpdir/scmroot/octave-ncarray
Cloning into '/var/lib/mock/f41-build-side-1-2969465-35819/root/chroot_tmpdir/scmroot/octave-ncarray'...
$ git fetch origin acb88dbbf6f85719df9736c19d0ac6b0a7f851c6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-ncarray
 * [new ref]         acb88dbbf6f85719df9736c19d0ac6b0a7f851c6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acb88db convert GPLv2+ license to SPDX