I'm currently trying to rework 10/15 separate microservices repos into a single monorepo. Local development works great, but I'm wondering how deploying each of these microservices will work.

Previously I was able to deploy each repo to production if any branch was merged to each repo's main branch. However with a monorepo setup I have no way of telling which specific microservice was modified and just deploy that one.

Is there a smart way to do this that I'm missing?