I don't use git features in vscode, but from what I understand the user clicked some button to make a commit, typed in a commit message, and then hit "OK" and the editor called `git commit ...` in the background... after silently adding "Co-Authored by Microsoft Copilot" to the commit message.

That's a little different than Claude doing the commits all by itself and happening to include an attribution line. Especially since, as it turns out, this was being done on clients that had all the AI stuff turned off. But even if that weren't the case, it'd still be wrong.

Also you shouldn't be using Claude that way...

Anthropic documents how to turn it off, though, and shows you in the commit message preview