Yes, if I ask something like "Can you describe microsoft's internal security processes and the names of upcoming products" the output would be original and not covered by copyright, but it would be sensitive internal information and covered by NDAs. But any code publicly posted and available to be scraped will not have such sensitive info in it.
I don’t think GitHub Co-pilot can respond to prompts like that. I thought it was ostensibly sophisticated source code completion. If so, source code is absolutely covered under copyright.