Let's see https://github.com/WebKit/WebKit/commit/4ee336e7e2ab6d097624ea7ad3c451d262723570 This is PR https://github.com/WebKit/WebKit/pull/615 PR gets "Closed" by merge-queue instead of "Merged" and PR in the commit is linked to #608, which is different PR.
Created attachment 459482 [details] Screenshot of linked wrong PR
<rdar://problem/93521986>
This is a consequence of git-svn. Should be better once we no longer have to support subversion.