$ git clone -n https://gitee.com/src-opencloudos-rpms/userspace-rcu.git /var/lib/mock/dist-oc9-build-121774-71772/root/chroot_tmpdir/scmroot/userspace-rcu
Cloning into '/var/lib/mock/dist-oc9-build-121774-71772/root/chroot_tmpdir/scmroot/userspace-rcu'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/userspace-rcu
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fecb1cf import userspace-rcu-0.14.0-6.tl4