$ git clone -n https://src.fedoraproject.org/rpms/plasma-firewall.git /var/lib/mock/f40-build-2127540-50785/root/chroot_tmpdir/scmroot/plasma-firewall
Cloning into '/var/lib/mock/f40-build-2127540-50785/root/chroot_tmpdir/scmroot/plasma-firewall'...
$ git fetch origin c32ce490219b0d84ca2f543e953845b2c5a615c8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-firewall
 * [new ref]         c32ce490219b0d84ca2f543e953845b2c5a615c8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c32ce49 5.91.0