sindresorhus/refined-github


The issue has been solved
Update feature `update-pr-from-base-branch` to use new API #2097
fregante posted onGitHub
https://developer.github.com/changes/2019-05-29-update-branch-api/
Originally posted by @yakov116 in https://github.com/sindresorhus/refined-github/issues/1236#issuecomment-497194640
This also enables the feature to work across forks, so this check can be dropped: https://github.com/sindresorhus/refined-github/blob/1ec1b32ec19d54d8c7b063ca5f5a36a29a7906d5/source/features/update-pr-from-base-branch.tsx#L91-L94