How can I set the default fetch type for Hibernate?

Question

I have a crufty old Java Enterprise program that I'm trying to bring into the current decade thanks to security audits flagging half the code it imports as being a security risk. As some of you know, somewhere in the mid 2010's Hibernate changed its defaults from LAZY loading for everything, to EAGER loading for almost everything.

Problem is, this breaks this program bad. It was annotated assuming everything was lazy loading, so the only annotations are for things that it wanted to fetch EAGER, which, uhm, wasn't much. The end result is a huge increase in the number of joins, which has caused performance to plummet disastrously because most of the joined entities aren't used in a typical batch operation. For example, the User field is necessary in order to query by user. But the user for a report is already fetched at the top of the loop that processes the user's records, so adding a JOIN to the query to eager fetch the user for each and every record just makes the report slower.

Most of my relationships aren't annotated for lazy fetching, and there's a lot of them. I could manually go in and, laboriously, one by one, annotate them for lazy fetching. Or I could change Hibernate's defaults back to what they were back when this program was written. I'd obviously much prefer the latter, for obvious reasons -- I really don't want to be spending any more time updating this antique code base than I have to, since we're in the process of writing its replacement.