The read_operations_during_rollback.js test waits for us to hit a GetMoreHangBeforeReadLock failpoint here. It is possible this failpoint is triggered on a collection we don't expect (e.g. local.oplog.rs), causing us to continue erroneously, before this getMore command is hung. This causes this getMore to succeed, because we ended up starting the rollback before the getMore had started. We should make sure that the getMore command is hung on the right collection before proceeding.