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What is Git Branch? - A Complete Guide to Git Branching

Learn everything about Git branches - from basic concepts to advanced branching strategies. Master Git branching with practical examples and best practices.
8 min readLogan FordLogan Ford

What is a Git Branch?

A Git branch is a lightweight, movable pointer to a commit that allows you to develop features, fix bugs, and experiment with new ideas in isolation from your main codebase. Branches are one of Git's most powerful features, enabling parallel development and efficient collaboration in software projects.


Understanding Git Branches:

1# View all branches
2git branch
3
4# Create a new branch
5git branch feature-login
6
7# Switch to the new branch
8git checkout feature-login
9
10# Create and switch in one command
11git checkout -b feature-login

Think of branches like parallel universes of your code. Each branch maintains its own version of the project, allowing you to:

  • Work on new features without affecting the main code
  • Experiment with different solutions
  • Collaborate with team members without interference
  • Maintain multiple versions of your software

💡 Pro tip: Always create a new branch for each feature or bug fix to keep your work organized and isolated.

Basic Branch Commands:

1# List all branches
2git branch
3
4# Create a new branch
5git branch <branch-name>
6
7# Switch to a branch
8git checkout <branch-name>
9
10# Create and switch (shorthand)
11git checkout -b <branch-name>
12
13# Delete a branch
14git branch -d <branch-name>

Common Branching Strategies:

  1. Feature Branching

    • Create a branch for each new feature
    • Merge back to main when complete
    • Keeps features isolated during development
  2. GitFlow

    • Main branch for production code
    • Develop branch for ongoing development
    • Feature branches for new features
    • Release branches for version preparation
    • Hotfix branches for urgent fixes
  3. Trunk-Based Development

    • Short-lived feature branches
    • Frequent merges to main
    • Emphasis on continuous integration

Creating and Switching Branches

Let's look at a practical example:

1# Start a new feature
2git checkout -b feature/user-authentication main
3
4# Make some changes
5git add .
6git commit -m "Add login form"
7
8# Push the new branch
9git push -u origin feature/user-authentication
  1. The command creates a new branch from 'main'
  2. Changes are committed to the new branch
  3. The branch is pushed to the remote repository

💡 Pro tip: Use descriptive branch names that reflect the feature or fix being implemented.


Merging Branches

Here's how to merge your changes back to the main branch:

1# Switch to main branch
2git checkout main
3
4# Update main branch
5git pull origin main
6
7# Merge your feature branch
8git merge feature/user-authentication
9
10# Push the changes
11git push origin main

Best practices for merging:

  1. Always update your main branch first
  2. Test your changes before merging
  3. Use meaningful commit messages
  4. Delete branches after successful merges

💡 Pro tip: Consider using pull requests for better code review and collaboration.


Handling Merge Conflicts

When Git can't automatically merge changes:

1# During a merge conflict
2git status # See conflicted files
3git diff # View the conflicts
4
5# After resolving conflicts
6git add <resolved-files>
7git commit -m "Resolve merge conflicts"
8
9# If you need to abort
10git merge --abort

Common causes of conflicts:

  • Multiple people editing the same file
  • Changes to the same lines of code
  • Divergent branch histories

Resolution steps:

  1. Identify conflicted files
  2. Open and edit the conflicts
  3. Choose which changes to keep
  4. Commit the resolution

Branch Management

Best practices for maintaining branches:

1# Clean up old branches
2git branch -d feature/completed
3
4# Force delete unmerged branch
5git branch -D feature/abandoned
6
7# List merged branches
8git branch --merged
9
10# List remote branches
11git branch -r

Regular maintenance tasks:

  • Delete merged branches
  • Review stale branches
  • Keep branch names consistent
  • Document branch purposes

💡 Pro tip: Regular branch cleanup prevents repository clutter and confusion.


Additional Resources

Common Interview Questions

  1. What is the difference between git merge and git rebase?
  2. How do you resolve merge conflicts in Git?
  3. What is a detached HEAD state?
  4. How do you recover a deleted branch?
  5. What is the purpose of the git branch -D command?

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