$ git clone -n https://gitee.com/opencloudos-stream/zchunk.git /var/lib/mock/dist-rebuild-after-rpm-check-build-130860-9017/root/chroot_tmpdir/scmroot/zchunk
Cloning into '/var/lib/mock/dist-rebuild-after-rpm-check-build-130860-9017/root/chroot_tmpdir/scmroot/zchunk'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/zchunk
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8424826 !2 Upgrade to 1.3.2 Merge pull request !2 from kianli/master