This question is really deep. The "distributed" nature of Git makes some things easier than SVN: you can scale to large teams, work offline, split a repo into independent subrepos for a while (managed via branches; good luck with the merge!).

However, this isn't really what Pijul calls "distributed": in Pijul, this term is about the work that people are doing when working collectively on a shared file. Which datastructures allow asynchronous contributions to happen? How to represent conflicts? Those questions belong to the field of distributed computing, together with things like CRDTs and leader elections.