$ git clone -n https://gitee.com/src-opencloudos-rpms/openchange /var/lib/mock/dist-oc8-build-40312-14136/root/chroot_tmpdir/scmroot/openchange
Cloning into '/var/lib/mock/dist-oc8-build-40312-14136/root/chroot_tmpdir/scmroot/openchange'...
$ git reset --hard origin/oc8
HEAD is now at 3b53c99 Rebuild