$ git clone -n https://gitee.com/opencloudos-stream/cvs.git /var/lib/mock/dist-ocs23-build-294961-28561/root/chroot_tmpdir/scmroot/cvs
Cloning into '/var/lib/mock/dist-ocs23-build-294961-28561/root/chroot_tmpdir/scmroot/cvs'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/cvs
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 742b000 update