PRs created from contributors' forks with the same branch name will be overloaded #425
Description
Consider that user1 and user2 forked w3c/aria-practices and created a branch on their respective user1/aria-practices and user2/aria-practices repositories, with the name patch-1 (popular default branch name). Then this repository's PR build step would attempt to create/update apg/patch-1 to represent the latest of either user's contributions which will obviously be a clash that "overwrites" the earlier contribution.
Would recommend that the PR builder process in this repository also includes the fork owner's name in the branch name to help prevent such a clash, eg. apg/user1-patch-1, apg/user2-patch-1, etc