$ git clone -n https://gitee.com/src-opencloudos-rpms/rt-setup /var/lib/mock/dist-oc8-build-30811-9200/root/chroot_tmpdir/scmroot/rt-setup
Cloning into '/var/lib/mock/dist-oc8-build-30811-9200/root/chroot_tmpdir/scmroot/rt-setup'...
$ git reset --hard origin/oc8
HEAD is now at 1190d16 import rt-setup-2.1-4.oc8