Asterix Chez Les Bretons (1986) : Pino Van Lamsweerde : Free Download, Borrow, and Streaming : Internet Archive

Couldn't find a way to share at a specific timestamp but if you go to 57:30 then Asterix and his fellow Gauls discover rugby from Les Bretons. Great lots of great rugby related gags!

Also found it interesting as a british person to hear the brits speak French with their accent. That's less rugby related though.