Merge commits now created using the merge-ort strategy

When GitHub creates merge commits, like to test whether a pull request can be merged cleanly or to actually merge a pull request, it now uses the merge-ort strategy. merge-ort is a relatively new Git merge strategy that is significantly faster (for example, complex merge commits that previously took 5 or more seconds to create are now created in less than 200 milliseconds) and addresses subtle correctness issues found in the merge-recursive strategy. And because merge-ort is the default merge strategy in the latest releases of Git, merge results are now more predictable and consistent between your local machine and GitHub.

Learn more about the Git merge-ort strategy and merge methods for pull requests.