Extend each subsection from the DevSecOps framework.

[mattaereal]

What content are you looking to modify or update?

Each subsection. Right now, they are:
14.1. Repository Hardening
14.2. Code Signing
14.3. Integrated Development Environments
14.4. Continuous Integration and Continuous Deployment

Why do you think this update or modification is needed?

There aren't many practical examples. At least a few use cases and links to proper documentation should be included.

Can you justify your argument and provide additional resources

It should be self-explanatory.
https://dev.to/pwd9000/github-repository-best-practices-23ck
https://docs.github.com/en/search?query=security