Most "activation code" repositories on GitHub are scams. They often contain empty files or READMEs with shady links designed to drive traffic to ad-filled websites.
: If you are a student or teacher, you can often get a significant discount directly through the official MacPaw store. cleanmymac+x+activation+code+github+hot
If you are looking for free, open-source tools to maintain your Mac without needing an activation code, several verified projects are available on GitHub: Most "activation code" repositories on GitHub are scams