We are willing to have a possibility to change location of /tmp directory when importing wsus pkg binaries using
SA java client --> Administration-->Patch Settings-->Microsoft-->WSUS-->Patch Database-->Import Metadata
This is currently possible in command line command line:
populate-opsware-update-library script --use_temp_download_path /var/opt/opsware/word/tmp_winpatches
And the only available arguments are --keep_temp and --verbose.