$ git clone -n https://gitee.com/opencloudos-stream/pcs.git /var/lib/mock/dist-ocs23-base-build-362360-43552/root/chroot_tmpdir/scmroot/pcs
Cloning into '/var/lib/mock/dist-ocs23-base-build-362360-43552/root/chroot_tmpdir/scmroot/pcs'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/pcs
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 704ad01 !20 Upgrade pcs to 3.1.21 Merge pull request !20 from zeyouliu/master