reminds me of an project I made many years ago to manage dependencies in between repositories. So if project A was waiting for a fix in project B to be in produ

reminds me of an project I made many years ago to manage dependencies in between repositories. So if project A was waiting for a fix in project B to be in production, you could draw a line between the two commits (from project A to project B) and get notified when the commit in project B gets into the "production" branch. And then merge and deploy your feature branch from project A.