$ git clone -n https://gitee.com/opencloudos-stream/novnc.git /var/lib/mock/dist-oc9-epol-build-68569-47006/root/chroot_tmpdir/scmroot/novnc
Cloning into '/var/lib/mock/dist-oc9-epol-build-68569-47006/root/chroot_tmpdir/scmroot/novnc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/novnc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8026466 !2 spec adjustment Merge pull request !2 from abushwang/master