$ git clone -n https://gitee.com/opencloudos-stream/diskimage-builder.git /var/lib/mock/dist-oc9-epol-build-68273-46975/root/chroot_tmpdir/scmroot/diskimage-builder
Cloning into '/var/lib/mock/dist-oc9-epol-build-68273-46975/root/chroot_tmpdir/scmroot/diskimage-builder'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/diskimage-builder
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd2051f !2 Bump version to 3.31.0 Merge pull request !2 from ZoeDong/master