A good response here would probably look more like, "While we appreciate you making the effort to contribute to the project, the patches you've been submitting

A good response here would probably look more like, "While we appreciate you making the effort to contribute to the project, the patches you've been submitting don't meet our quality standards because [reason - poorly structured? no tests? full of bugs?]. I recommend you [take an online learning course, write tests, read our coding guidelines] before you submit any more patches."