Two separate GitHub features satisfy the security requirements. Push protection is part of secret scanning and blocks supported secrets before they are pushed to a repository, helping prevent credentials from being committed. GitHub Copilot code referencing addresses potentially unoriginal suggestions: when public-code matches are allowed, accepted inline suggestions that match public GitHub code can be logged with source URLs and license information so developers can review the origin. Disabling inline suggestions would violate the requirement that developers continue using Copilot completions. Repository custom instructions may influence generated code, but they do not replace secret scanning or public-code matching. Therefore, enabling push protection together with Copilot code referencing is the correct combination.

================