$ git clone -n https://src.fedoraproject.org/rpms/kf6-ki18n.git /var/lib/mock/f39-build-2046823-48824/root/chroot_tmpdir/scmroot/kf6-ki18n
Cloning into '/var/lib/mock/f39-build-2046823-48824/root/chroot_tmpdir/scmroot/kf6-ki18n'...
$ git fetch origin 9fc40ff6e6172f8a811621dddfdf22b3043e435f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-ki18n
 * [new ref]         9fc40ff6e6172f8a811621dddfdf22b3043e435f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9fc40ff Added the README