[opensuse-buildservice] expandpackages issue when using build tool locally

Hi, I tried to use build tool (build -repo=xxxxx xxx.src.rpm) locally and found a issue . The source rpm package can be built successfully on the OBS but fail with build tool locally (the config file is the as the OBS server). I checked the issue and found the generated rpmlist is different with the server. The local build tool missed some build dependencies. Has anyone met this issue and any diff between these two methods to get the rpmlist for initializing build environment? Thanks vivian