$ git clone -n https://gitee.com/src-opencloudos-rpms/snappy /var/lib/mock/dist-oc9-build-52791-14649/root/chroot_tmpdir/scmroot/snappy
Cloning into '/var/lib/mock/dist-oc9-build-52791-14649/root/chroot_tmpdir/scmroot/snappy'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/snappy
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3de8ecc Rebuild