$ git clone -n https://gitee.com/opencloudos-stream/stargz-snapshotter.git /var/lib/mock/dist-oc9-epol-build-228924-81257/root/chroot_tmpdir/scmroot/stargz-snapshotter
Cloning into '/var/lib/mock/dist-oc9-epol-build-228924-81257/root/chroot_tmpdir/scmroot/stargz-snapshotter'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/stargz-snapshotter
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a9f1d0 !16 fix hardlink error in no memory httpcache Merge pull request !16 from abushwang/master