I suggest group-commits-by-file , group-commits , or group-by-file, depending on whether you want it to make sense out of context and whether you ever group commits differently. You might then feel compelled to add a final line like “… and 12 files with 1 commit each”, or even to enumerate them, which sounds like it’d be useful anyway. “what” isn’t doing any work, there’s already an implicit “what” in the call-response paradigm. “Changed” implies you’re detecting changes, but you’re not, you’re operating on a data structure that happens to represent changes.