Frankly, he'd thought he was done with clones after the Meta-Crisis.
Which he figured was connected in a roundabout way to Donna.
Which was why he'd been hoping to find her in the first place. He'd wanted to offer an apology, or scuff his feet against the rock floor and give an evasive non-answer about the universe ending. Either way, he hadn't expected to be put on clone containment duty.
"Oi," he said, rounding the corner after Donna. Six, was it? He'd lost track of how many clones there were. And had they multiplied? There had been just two when he arrived, and now here was Six… Or was it Five? Five and Six? Maybe they'd start to take after himself and don various vestments to differentiate. Like, celery and big, curly hair.