Where does “patch” come from?

I appreciate the detailed instructions, but I need to point out an issue: you've provided an Italian word (pazzo, meaning "crazy") but asked me to write the etymology for an English word (patch) with an unknown meaning. These don't match. Could you clarify: 1. Am I writing the etymology for "patch" (English)? 2. Or for "pazzo" (Italian)? 3. And could you provide the complete etymological chain, including all intermediate languages between the headword and the oldest known form? Once I have the correct chain, I'll write the one-sentence summary following all your specifications.

patch (English): A piece of cloth, or other suitable material,...