$ git clone -n https://gitee.com/opencloudos-stream/nvidia.git /var/lib/mock/dist-oc9-epol-build-228675-81220/root/chroot_tmpdir/scmroot/nvidia
Cloning into '/var/lib/mock/dist-oc9-epol-build-228675-81220/root/chroot_tmpdir/scmroot/nvidia'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/nvidia
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c37429 !1 update repo Merge pull request !1 from yugozhang/master