To be so hyper aware of your debate opponent’s tactics and tendencies, that their mention of a detail, spurs you to call out their fallacious direction before they actually commit the fallacy.
Example: Upon a debate opponent’s request “Who wrote that debunking of Isaiah 53?” you tell them they can’t reject content by the person’s background or characteristics, that’s fallacious.
Though there is grounds to head off any fallacious behavior, its fallacious to prelabel their fallacy before they commit it.
Best to rephrase: “Do you hope to discredit the content if you don’t recognize the author? “