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Fork A Repo

fork is a copy of a repository. Forking a repository allows you to freely experiment with changes without affecting the original project.
Most commonly, forks are used to either propose changes to someone else's project or to use someone else's project as a starting point for your own idea.
Propose changes to someone else's project
A great example of using forks to propose changes is for bug fixes. Rather than logging an issue for a bug you've found, you can:
  • Fork the repository.
  • Make the fix.
  • Submit a pull request to the project owner.
If the project owner likes your work, they might pull your fix into the original repository!
Use someone else's project as a starting point for your own idea.
At the heart of open source is the idea that by sharing code, we can make better, more reliable software.
In fact, when you create a repository on GitHub, you have a choice of automatically including a license file, which determines how you want your project to be shared with others.

Fork an example repository

Forking a repository is a simple two-step process. We've created a repository for you to practice with!
  1. On GitHub, navigate to the octocat/Spoon-Knife repository.
  2. Fork buttonIn the top-right corner of the page, click Fork.
That's it! Now, you have a fork of the original octocat/Spoon-Knife repository.

Keep your fork synced

You might fork a project in order to propose changes to the upstream, or original, repository. In this case, it's good practice to regularly sync your fork with the upstream repository. To do this, you'll need to use Git on the command line. You can practice setting the upstream repository using the same octocat/Spoon-Knife repository you just forked!

Step 1: Set Up Git

If you haven't yet, you should first set up Git. Don't forget to set up authentication to GitHub from Git as well.

Step 2: Create a local clone of your fork

Right now, you have a fork of the Spoon-Knife repository, but you don't have the files in that repository on your computer. Let's create a clone of your fork locally on your computer.
  1. On GitHub, navigate to your fork of the Spoon-Knife repository.
  2. Clone URL buttonIn the right sidebar of your fork's repository page, click  to copy the clone URL for your fork.
  3. Open Terminal (for Mac users) or the command prompt (for Windows and Linux users).
  4. Type git clone, and then paste the URL you copied in Step 2. It will look like this, with your GitHub username instead of YOUR-USERNAME:
    git clone
  5. Press Enter. Your local clone will be created.
    git clone
    # Cloning into `Spoon-Knife`...
    # remote: Counting objects: 10, done.
    # remote: Compressing objects: 100% (8/8), done.
    # remove: Total 10 (delta 1), reused 10 (delta 1)
    # Unpacking objects: 100% (10/10), done.
Now, you have a local copy of your fork of the Spoon-Knife repository!

Step 3: Configure Git to sync your fork with the original Spoon-Knife repository

When you fork a project in order to propose changes to the original repository, you can configure Git to pull changes from the original, or upstream, repository into the local clone of your fork.
  1. On GitHub, navigate to the octocat/Spoon-Knife repository.
  2. Clone URL buttonIn the right sidebar of the repository page, click  to copy the clone URL for the repository.
    1. Open Terminal (for Mac users) or the command prompt (for Windows and Linux users).
  3. Change directories to the location of the fork you cloned in Step 2: Create a local clone of your fork.
    • To go to your home directory, type just cd with no other text.
    • To list the files and folders in your current directory, type ls.
    • To go into one of your listed directories, type cd your_listed_directory.
    • To go up one directory, type cd ...
  4. Type git remote -v and press Enter. You'll see the current configured remote repository for your fork.
    git remote -v
    # origin (fetch)
    # origin (push)
  5. Type git remote add upstream, and then paste the URL you copied in Step 2 and pressEnter. It will look like this:
    git remote add upstream
  6. To verify the new upstream repository you've specified for your fork, type git remote -vagain. You should see the URL for your fork as origin, and the URL for the original repository as upstream.
    git remote -v
    # origin (fetch)
    # origin (push)
    # upstream (fetch)
    # upstream (push)
Now, you can keep your fork synced with the upstream repository with a few Git commands. For more information, see "Syncing a fork."

Next Steps

The sky's the limit with the changes you can make to a fork, including:
  • Creating branches: Branches allow you to build new features or test out ideas without putting your main project at risk.
  • Opening pull requests: If you are hoping to contribute back to the original repository, you can send a request to the original author to pull your fork into their repository by submitting a pull request.

Find another repository to fork

Every public repository can be forked, so find another project you're interested in and get forking!
Explore GitHub is a great place to find projects that pique your interest. Visit that page often to see what's new and cool.
GitHub Explore page


You have now forked a repository, practiced cloning your fork, and configured an upstream repository. What do you want to do next?


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