That’s probably not possible - the audit worker is not aware of multiple copies, it will just ask for the piece, and if that piece on another copy, but not here - well, this audit will be considered as failed.
Perhaps it’s better to write a tool, which could emulate node’s behavior with multiple TBs of data.
Or join a new node to the QA satellite:
And ask to upload several TBs of test data, or do it yourself joining it as a customer. @littleskunk thoughts?