$ git clone -n https://src.fedoraproject.org/rpms/octave-jnifti.git /var/lib/mock/f41-build-side-1-2971375-35826/root/chroot_tmpdir/scmroot/octave-jnifti
Cloning into '/var/lib/mock/f41-build-side-1-2971375-35826/root/chroot_tmpdir/scmroot/octave-jnifti'...
$ git fetch origin 6e9fdcd206f862a22f836f851d2b7d9fdf446449:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-jnifti
 * [new ref]         6e9fdcd206f862a22f836f851d2b7d9fdf446449 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e9fdcd convert license to SPDX