No tool is 100% undetected forever. Anti-cheats are updated daily. Using a public GitHub project increases your risk because anti-cheat developers also have access to that same code to create detection signatures.
The ability to scramble the binary so it doesn't match known "cheat" signatures. The Risks: A Word of Caution
Unlike "premium" cheat providers, GitHub projects are generally free under various open-source licenses. Key Features to Look For
Using custom drivers to read/write memory without being blocked by the OS or the game's security.