$ git clone -n https://src.fedoraproject.org/rpms/freemarker.git /var/lib/mock/f39-build-1686961-41103/root/chroot_tmpdir/scmroot/freemarker
Cloning into '/var/lib/mock/f39-build-1686961-41103/root/chroot_tmpdir/scmroot/freemarker'...
$ git fetch origin 43b4bfd864a738e1e2f5fb2b8cc87430002b6430:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freemarker
 * [new ref]         43b4bfd864a738e1e2f5fb2b8cc87430002b6430 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43b4bfd migrate to SPDX license