$ git clone -n https://gitee.com/src-opencloudos-rpms/luajit.git /var/lib/mock/dist-oc9-build-61305-16463/root/chroot_tmpdir/scmroot/luajit
Cloning into '/var/lib/mock/dist-oc9-build-61305-16463/root/chroot_tmpdir/scmroot/luajit'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/luajit
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 313b869 import luajit-2.1.0-0.28beta3.tl4