Having worked in enterprise software, it has been my experience that the majority of in-house repos operate in a caching mode and not mirroring. The critical el

Having worked in enterprise software, it has been my experience that the majority of in-house repos operate in a caching mode and not mirroring. The critical element is being able to build things in CI that are being PR'd/reviewed or are already merged and in both cases the relevant dependencies should already be cached. That and being able to re-build any tagged releases, again should be cached. New libraries being temporarily unavailable are generally not going to hold up critical processes, and the upstreams have been available enough for that to never be a serious issue.