$ git clone -n https://gitee.com/opencloudos-stream/userspace-rcu.git /var/lib/mock/dist-ocs23-build-110077-6931/root/chroot_tmpdir/scmroot/userspace-rcu
Cloning into '/var/lib/mock/dist-ocs23-build-110077-6931/root/chroot_tmpdir/scmroot/userspace-rcu'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/userspace-rcu
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52349b1 !2 Add BuildRequires of gcc gcc-c++ Merge pull request !2 from doriscchao/master