This version of GitHub Enterprise will be discontinued on This version of GitHub Enterprise was discontinued on 2020-11-12. No patch releases will be made, even for critical security issues. For better performance, improved security, and new features, upgrade to the latest version of GitHub Enterprise. For help with the upgrade, contact GitHub Enterprise support.

About collaborative development models

The way you use pull requests depends on the type of development model you use in your project.

Did this doc help you?

Help us make these docs great!

All GitHub docs are open source. See something that's wrong or unclear? Submit a pull request.

Make a contribution

Or, learn how to contribute.

There are two main types of development models with which you'd use pull requests. In the fork and pull model, anyone can fork an existing repository and push changes to their personal fork. You do not need permission to the source repository to push to a user-owned fork. The changes can be pulled into the source repository by the project maintainer. When you open a pull request proposing changes from your user-owned fork to a branch in the source (upstream) repository, you can allow anyone with push access to the upstream repository to make changes to your pull request. This model is popular with open source projects as it reduces the amount of friction for new contributors and allows people to work independently without upfront coordination.

Tip: For more information on open source, specifically how to create and grow an open source project, we've created Open Source Guides that will help you foster a healthy open source community. You can also take a free GitHub Learning Lab course on maintaining open source communities.

In the shared repository model, collaborators are granted push access to a single shared repository and topic branches are created when changes need to be made. Pull requests are useful in this model as they initiate code review and general discussion about a set of changes before the changes are merged into the main development branch. This model is more prevalent with small teams and organizations collaborating on private projects.

Further reading

Did this doc help you?

Help us make these docs great!

All GitHub docs are open source. See something that's wrong or unclear? Submit a pull request.

Make a contribution

Or, learn how to contribute.