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docs/content/get-started/quickstart/fork-a-repo.md
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Fork a repo
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A fork is a copy of a repository. Forking a repository allows you to freely experiment with changes without affecting the original project. {% data reusables.enterprise-accounts.emu-permission-fork %}
fpt ghes ghae ghec
* * * *
Pull requests
Issues
Notifications
Accounts

About forks

Most commonly, forks are used to either propose changes to someone else's project to which you do not have write access, or to use someone else's project as a starting point for your own idea. You can fork a repository to create a copy of the repository and make changes without affecting the upstream repository. For more information, see "Working with forks."

Propose changes to someone else's project

For example, you can use forks to propose changes related to fixing a bug. Rather than logging an issue for a bug you have found, you can:

  • Fork the repository.
  • Make the fix.
  • Submit a pull request to the project owner.

Use someone else's project as a starting point for your own idea.

Open source software is based on the idea that by sharing code, we can make better, more reliable software. For more information, see the "About the Open Source Initiative" on the Open Source Initiative.

For more information about applying open source principles to your organization's development work on {% data variables.location.product_location %}, see {% data variables.product.prodname_dotcom %}'s white paper "An introduction to innersource."

{% ifversion fpt or ghes or ghec %}

When creating your public repository from a fork of someone's project, make sure to include a license file that determines how you want your project to be shared with others. For more information, see "Choose an open source license" at choosealicense.com.

{% data reusables.open-source.open-source-guide-repositories %} {% data reusables.open-source.open-source-learning %}

{% endif %}

Prerequisites

If you have not yet, you should first set up Git. Don't forget to set up authentication to {% data variables.location.product_location %} from Git as well.

Forking a repository

{% webui %}

You might fork a project 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.

  1. On {% ifversion fpt or ghec %}{% data variables.product.prodname_dotcom_the_website %}{% else %}{% data variables.location.product_location %}{% endif %}, navigate to the octocat/Spoon-Knife repository.
  2. In the top-right corner of the page, click Fork. Fork button{% ifversion fpt or ghec or ghes > 3.5 or ghae > 3.5 %}
  3. Select an owner for the forked repository. Create a new fork page with owner dropdown emphasized
  4. By default, forks are named the same as their parent repositories. You can change the name of the fork to distinguish it further. Create a new fork page with repository name field emphasized
  5. Optionally, add a description of your fork. Create a new fork page with description field emphasized
  6. Choose whether to copy only the default branch or all branches to the new fork. For many forking scenarios, such as contributing to open-source projects, you only need to copy the default branch. By default, only the default branch is copied. Option to copy only the default branch
  7. Click Create fork. Emphasized create fork button

{% note %}

Note: If you want to copy additional branches from the parent repository, you can do so from the Branches page. For more information, see "Creating and deleting branches within your repository."{% endnote %}{% endif %}

{% endwebui %}

{% cli %}

{% data reusables.cli.cli-learn-more %}

To create a fork of a repository, use the gh repo fork subcommand.

gh repo fork REPOSITORY

To create the fork in an organization, use the --org flag.

gh repo fork REPOSITORY --org "octo-org"

{% endcli %}

{% desktop %} {% enddesktop %}

Cloning your forked repository

Right now, you have a fork of the Spoon-Knife repository, but you do not have the files in that repository locally on your computer.

{% webui %}

  1. On {% ifversion fpt or ghec %}{% data variables.product.prodname_dotcom_the_website %}{% else %}{% data variables.location.product_location %}{% endif %}, navigate to your fork of the Spoon-Knife repository. {% data reusables.repositories.copy-clone-url %} {% data reusables.command_line.open_the_multi_os_terminal %} {% data reusables.command_line.change-current-directory-clone %}
  2. Type git clone, and then paste the URL you copied earlier. It will look like this, with your {% data variables.product.product_name %} username instead of YOUR-USERNAME:
$ git clone https://{% data variables.command_line.codeblock %}/YOUR-USERNAME/Spoon-Knife
  1. Press Enter. Your local clone will be created.
$ git clone https://{% data variables.command_line.codeblock %}/YOUR-USERNAME/Spoon-Knife
> Cloning into `Spoon-Knife`...
> remote: Counting objects: 10, done.
> remote: Compressing objects: 100% (8/8), done.
> remote: Total 10 (delta 1), reused 10 (delta 1)
> Unpacking objects: 100% (10/10), done.

{% endwebui %}

{% cli %}

{% data reusables.cli.cli-learn-more %}

To create a clone of your fork, use the --clone flag.

gh repo fork REPOSITORY --clone=true

{% endcli %}

{% desktop %}

{% data reusables.desktop.choose-clone-repository %} {% data reusables.desktop.cloning-location-tab %} {% data reusables.desktop.cloning-repository-list %} {% data reusables.desktop.choose-local-path %} {% data reusables.desktop.click-clone %}

{% enddesktop %}

Configuring Git to sync your fork with the original 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.

{% webui %}

  1. On {% ifversion fpt or ghec %}{% data variables.product.prodname_dotcom_the_website %}{% else %}{% data variables.location.product_location %}{% endif %}, navigate to the octocat/Spoon-Knife repository. {% data reusables.repositories.copy-clone-url %} {% data reusables.command_line.open_the_multi_os_terminal %}
  2. Change directories to the location of the fork you cloned.
    • 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 ...
  3. Type git remote -v and press Enter. You will see the current configured remote repository for your fork.
$ git remote -v
> origin  https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (fetch)
> origin  https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (push)
  1. Type git remote add upstream, and then paste the URL you copied in Step 3 and press Enter. It will look like this:
$ git remote add upstream https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/Spoon-Knife.git
  1. To verify the new upstream repository you have specified for your fork, type git remote -v again. You should see the URL for your fork as origin, and the URL for the original repository as upstream.
$ git remote -v
> origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/ YOUR_FORK</em>.git (fetch)
> origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (push)
> upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ ORIGINAL_REPOSITORY.git (fetch)
> upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ ORIGINAL_REPOSITORY.git (push)

Now, you can keep your fork synced with the upstream repository with a few Git commands. For more information, see "Syncing a fork."

{% endwebui %}

{% cli %}

{% data reusables.cli.cli-learn-more %}

To configure a remote repository for the forked repository, use the --remote flag.

gh repo fork REPOSITORY --remote=true

To specify the remote repository's name, use the --remote-name flag.

gh repo fork REPOSITORY --remote-name "main-remote-repo"

{% endcli %}

Editing a fork

You can make any changes 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

Fork a repository to start contributing to a project. {% data reusables.repositories.you-can-fork %}

{% ifversion fpt or ghec %}You can browse Explore to find projects and start contributing to open source repositories. For more information, see "Finding ways to contribute to open source on {% data variables.product.prodname_dotcom %}."

{% endif %}

Next Steps

You have now forked a repository, practiced cloning your fork, and configured an upstream repository.

  • For more information about cloning the fork and syncing the changes in a forked repository from your computer, see "Set up Git."

  • You can also create a new repository where you can put all your projects and share the code on {% data variables.product.prodname_dotcom %}. {% data reusables.getting-started.create-a-repository %}"

  • {% data reusables.getting-started.being-social %}

  • {% data reusables.support.connect-in-the-forum-bootcamp %}