GitHub Mastery: Final Knowledge Test

Challenge 1: The Git Lifecycle

Scenario: You accidentally ran git add secret_key.env. You have NOT committed yet.

Question: What is the exact command to "Unstage" that one file while keeping it on your hard drive?
Answer Goal: Explain why git restore --staged is the professional's choice.

Challenge 2: Branching Strategy

Scenario: Your company releases software once per month and needs to maintain an "Emergency Hotfix" capability for production bugs while the team works on the next version.

Question: Which branching strategy would you recommend: Trunk-Based Development or GitFlow? Why?

Challenge 3: Automation (Actions)

Scenario: You want your GitHub Action to run ONLY when a Pull Request is opened against the main branch, but NOT when it's opened against a feature branch.

Question: Write the YAML trigger logic to achieve this.

Challenge 4: Security

Scenario: You suspect that an API key used in your Actions has been leaked to the internet.

Question: What are the three steps you must take in GitHub to fix this? (Hint: Rotate, Secret Scanning, Rotate).

Final Milestone

If you can confidently answer these four questions, you are ready to manage repositories for the largest companies on earth. The road ahead involves depth: mastering complex git rebase workflows, building custom GitHub Apps, and leading high-speed DevOps teams.

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You have graduated from the GitHub Mastery Course — The future of collaboration is in your hands.