Some queries show up as "getmore" in currentOp or the database profile logs. I believe the slow logs might contain the original query with the cursor id, but even then, the original could be removed from the capped collection.

It would be nice if currentOp and the database profiler would keep a copy of the query as a comment somehow.

The issue is, make it easy to know what is going on in detail with currentOp or the logs so an amateur can figure out easily what is happening to mongod.