$ git clone -n https://src.fedoraproject.org/rpms/python-ffc.git /var/lib/mock/f39-build-1999662-43957/root/chroot_tmpdir/scmroot/python-ffc
Cloning into '/var/lib/mock/f39-build-1999662-43957/root/chroot_tmpdir/scmroot/python-ffc'...
$ git fetch origin 8faa21bc0477bdf7f73230e488a70f7d11763d0b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ffc
 * [new ref]         8faa21bc0477bdf7f73230e488a70f7d11763d0b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8faa21b Convert license tag to SPDX