$ git clone -n https://gitee.com/opencloudos-stream/golang-github-siddontang-snappy.git /var/lib/mock/dist-oc9-epol-build-104143-66355/root/chroot_tmpdir/scmroot/golang-github-siddontang-snappy
Cloning into '/var/lib/mock/dist-oc9-epol-build-104143-66355/root/chroot_tmpdir/scmroot/golang-github-siddontang-snappy'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/golang-github-siddontang-snappy
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d88af6 update