Everything public on GitHub is, by definition, . Anti-cheat vendors have automated crawlers alerting them to new "undetected" repos. They capture the binary, reverse engineer it, and add detection within 24-72 hours.
These can work for a few days or weeks. But anti-cheat vendors monitor GitHub. As soon as a new "undetected" build gains popularity, its signatures are added to the next ban wave. undetected cheat engine github free