$ git clone -n https://src.fedoraproject.org/rpms/nomacs.git /var/lib/mock/f41-build-side-1-2812521-32941/root/chroot_tmpdir/scmroot/nomacs
Cloning into '/var/lib/mock/f41-build-side-1-2812521-32941/root/chroot_tmpdir/scmroot/nomacs'...
$ git fetch origin 99049fc9793265a5a386e09bb8f989ab723180b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nomacs
 * [new ref]         99049fc9793265a5a386e09bb8f989ab723180b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99049fc convert license to SPDX