$ git clone -n https://src.fedoraproject.org/rpms/xfce4-screensaver.git /var/lib/mock/f41-build-side-1-2816875-32979/root/chroot_tmpdir/scmroot/xfce4-screensaver
Cloning into '/var/lib/mock/f41-build-side-1-2816875-32979/root/chroot_tmpdir/scmroot/xfce4-screensaver'...
$ git fetch origin 4fd7bac97ef00953156b8224d036f116f8cfa5ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-screensaver
 * [new ref]         4fd7bac97ef00953156b8224d036f116f8cfa5ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fd7bac convert license to SPDX