Just for information I'm working on establishing a revcheck from git, I'm expecting this to be done within the next couple of days as last year I was playing around making doc.php.net a static website built via GitLab CI.
This would also take care of mapping SVN revision to git commits, such a hashmap can be easily create after parsing the content of the following git command: git log --grep="git-svn-id" --format="%H:%(trailers:valueonly,unfold,key=git-svn-id,separator=%n)" used in the doc-en repo. I will try to keep the list updated on the progress. Best regards, George P. Banyard