$ git clone -n https://gitee.com/opencloudos-stream/libvncserver.git /var/lib/mock/dist-ocs23-base-build-311937-32851/root/chroot_tmpdir/scmroot/libvncserver
Cloning into '/var/lib/mock/dist-ocs23-base-build-311937-32851/root/chroot_tmpdir/scmroot/libvncserver'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libvncserver
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0c22072 !2 fix CVE-2020-29260 Merge pull request !2 from cunshunxia/master