PS: sorry for the duplicate in case someone else created a task for T36646#386081 - I didn't find one when I searched.

It's not clear what you're requesting here.

If it's about seeing "patrolled" status of revisions that are no longer in recentchanges: The "patrolled" flag only exists in the recentchanges table, so changes to MediaWiki's database structure would be required first. The bug for that is probably T19237.

If it's about being able to query recentchanges by rev_id: There would first need to be an index on the rc_this_oldid field. I don't know if a bug for that actually exists yet.

If it's about seeing "patrolled" status of revisions that are no longer in recentchanges

Yeah, I think this is it: I want the status for any given revision, be it recent or not.
https://pt.wikipedia.org/w/api.php?action=query&somequery=cool

{
    "query": {
        "12345": {
            "patrolled": true
        },
        "6789": {
            "patrolled": false
        },
        ...
    }
}