How to modify a pull request on GitHub to change target branch to merge into?

Question

I have a pull request that is requesting a merge into master from my branch, but the owner wants me to change the request to merge into a different branch from my branch.

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Answer 1

You can now: https://github.com/blog/2224-change-the-base-branch-of-a-pull-request

"You can now change the base branch of an open pull request. After you’ve created a pull request, you can modify the base branch so that the changes in the pull request are compared against a different branch. By changing the base branch of your original pull request rather than opening a new one with the correct base branch, you’ll be able to keep valuable work and discussion."