> Agents use source control, too.

This is true, but at 30,000 merges a day we're talking about nearly 1 million merges a month, and purely autonomous agentic merges tend to be noisy. Is this still a tractable problem, even for an agent? Do revisions older than a few days, other than perhaps release snapshots, have any relevance for such a process?

Not all merges are equal, even if it's a monorepo, it's probably rare that you'd have to look at the whole codebase to implement a new feature or find the root cause of a bug. Once you start looking at the history of a specific folder, it becomes more tractable.

Of course that does require some folder structure, and agents are not necessarily great at that, but they're still decent enough that you do end up with many folders not being impacted hour or even daily.