$ git clone -n https://gitee.com/opencloudos-stream/nox.git /var/lib/mock/dist-oc9-epol-build-151118-79728/root/chroot_tmpdir/scmroot/nox
Cloning into '/var/lib/mock/dist-oc9-epol-build-151118-79728/root/chroot_tmpdir/scmroot/nox'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/nox
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 440b62a !5 Rebuilt for loongarch64 Merge pull request !5 from brucezhang/master