$ git clone -n https://gitee.com/opencloudos-stream/cvs.git /var/lib/mock/dist-oc9-epol-build-139786-79709/root/chroot_tmpdir/scmroot/cvs
Cloning into '/var/lib/mock/dist-oc9-epol-build-139786-79709/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 8e7a6b9 !2 Rebuilt for loongarch64 Merge pull request !2 from brucezhang/master