$ git clone -n https://gitee.com/opencloudos-stream/golang-github-opencontainers-image-spec.git /var/lib/mock/dist-oc9-epol-build-110314-67591/root/chroot_tmpdir/scmroot/golang-github-opencontainers-image-spec
Cloning into '/var/lib/mock/dist-oc9-epol-build-110314-67591/root/chroot_tmpdir/scmroot/golang-github-opencontainers-image-spec'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/golang-github-opencontainers-image-spec
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b973934 update