What a branch is (pointer to a commit) in Git - Mini Project: Build & Apply

Understanding Git Branches as Pointers to Commits

📖 Scenario: You are working on a simple project using Git. You want to understand how branches work as pointers to specific commits in your project history.

🎯 Goal: Learn how to create a branch in Git and see how it points to a specific commit.

📋 What You'll Learn

Create a Git repository with an initial commit

Create a branch named feature

Check the commit that the feature branch points to

Display the commit hash of the feature branch

💡 Why This Matters

🌍 Real World

Developers use branches to work on new features or fixes without affecting the main code. Understanding branches as pointers helps manage code changes safely.

💼 Career

Knowing how branches work is essential for collaboration in software teams and for managing code versions effectively.

1

Initialize Git repository and create initial commit

Run git init to create a new Git repository and then create a file named README.md with the content Initial commit. Add the file and commit it with the message Initial commit.

Git

# Run git init and create README.md with 'Initial commit' content
# Then add and commit the file
# Your code here

Need a hint?

Use git init to start the repository. Then create the file and commit it.

2

Create a branch named feature

Create a new branch called feature using the command git branch feature.

Git

git init

echo "Initial commit" > README.md
git add README.md
git commit -m "Initial commit"
# Create a branch named 'feature'
# Your code here

Need a hint?

Use git branch feature to create the branch.

3

Check the commit hash that the feature branch points to

Use git rev-parse feature to find the commit hash that the feature branch points to.

Git

git init

echo "Initial commit" > README.md
git add README.md
git commit -m "Initial commit"
git branch feature
# Show the commit hash for 'feature' branch
# Your code here

Need a hint?

git rev-parse feature shows the commit hash the branch points to.

4

Display the commit hash of the feature branch

Print the output of git rev-parse feature to display the commit hash that the feature branch points to.

Git

git init

echo "Initial commit" > README.md
git add README.md
git commit -m "Initial commit"
git branch feature
git rev-parse feature
# Output the commit hash
# Your code here

Need a hint?

The command git rev-parse feature outputs the commit hash directly.