It's under the MIT license and in a public github repo - shouldn't that be enough? If you don't want your code public, don't put it in a public repo (if you can

It's under the MIT license and in a public github repo - shouldn't that be enough? If you don't want your code public, don't put it in a public repo (if you can't afford a private one, just use git locally) and certainly don't stick an open-source license on it.