$ git clone -n https://src.fedoraproject.org/rpms/python-ftfy.git /var/lib/mock/f42-build-3490674-45852/root/chroot_tmpdir/scmroot/python-ftfy
Cloning into '/var/lib/mock/f42-build-3490674-45852/root/chroot_tmpdir/scmroot/python-ftfy'...
$ git fetch origin bfb9558f2bd018c3740d8de75e7c3dbe99658773:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ftfy
 * [new ref]         bfb9558f2bd018c3740d8de75e7c3dbe99658773 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfb9558 Update to 6.3.1