About pull request merges
In a pull request, you propose that changes you've made on a head branch should be merged into a base branch. By default, any pull request can be merged at any time, unless the head branch is in conflict with the base branch. However, there may be restrictions on when you can merge a pull request into a specific branch. For example, you may only be able to merge a pull request into the default branch if required status checks are passing. Repository administrators can add constraints like this to branches using branch protection rules. For more information, see About protected branches.
As an alternative to branch protection rules or tag protection rules, you can create rulesets. Rulesets have a few advantages over branch and tag protection rules, such as statuses, and better discoverability without requiring admin access. You can also apply multiple rulesets at the same time. For more information, see "About rulesets."
You can configure a pull request to merge automatically when all merge requirements are met. For more information, see "Automatically merging a pull request."
If the pull request has merge conflicts, or if you'd like to test the changes before merging, you can check out the pull request locally and merge it using the command line.
You can't merge a draft pull request. For more information about draft pull requests, see About pull requests.
The repository may be configured so that the head branch for a pull request is automatically deleted when you merge a pull request. For more information, see Managing the automatic deletion of branches.
Note
If you delete a head branch after its pull request has been merged, GitHub checks for any open pull requests in the same repository that specify the deleted branch as their base branch. GitHub automatically updates any such pull requests, changing their base branch to the merged pull request's base branch. For more information, see About branches.
Pull requests are merged using the --no-ff option, except for pull requests with squashed or rebased commits, which are merged using the fast-forward option.
You can link a pull request to an issue to show that a fix is in progress and to automatically close the issue when someone merges the pull request. For more information, see "Linking a pull request to an issue."
If you decide you don't want the changes in a topic branch to be merged to the upstream branch, you can close the pull request without merging.
Merging a pull request
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Under your repository name, click Pull requests.
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In the "Pull Requests" list, click the pull request you'd like to merge.
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Scroll down to the bottom of the pull request. Depending on the merge options enabled for your repository, you can:
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Merge all of the commits into the base branch by clicking Merge pull request. If the Merge pull request option is not shown, click the merge dropdown menu and select Create a merge commit.
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Squash the commits into one commit by clicking the merge dropdown menu, selecting Squash and merge and then clicking Squash and merge.
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Rebase the commits individually onto the base branch by clicking the merge dropdown menu, selecting Rebase and merge and then clicking Rebase and merge.
Note
Rebase and merge will always update the committer information and create new commit SHAs. For more information, see About pull request merges.
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If prompted, type a commit message, or accept the default message.
For information about the default commit messages for squash merges, see "About pull request merges."
Note
The email selector is not available for rebase merges, which do not create a merge commit, or for squash merges, which credit the user who created the pull request as the author of the squashed commit.
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Click Confirm merge, Confirm squash and merge, or Confirm rebase and merge.
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Optionally, delete the branch. This keeps the list of branches in your repository tidy.
Note
To learn more about GitHub CLI, see "About GitHub CLI."
To merge a pull request, use the gh pr merge subcommand. Replace pull-request with the number, URL, or head branch of the pull request.
gh pr merge PULL-REQUEST
Follow the interactive prompts to complete the merge. For more information about the merge methods that you can choose, see About pull request merges.
Alternatively, you can use flags to skip the interactive prompts. For example, this command will squash the commits into a single commit with the commit message "my squash commit", merge the squashed commit into the base branch, and then delete the local and remote branch.
gh pr merge 523 --squash --body "my squash commit" --delete-branch