Distributed Version Control basics

1. Clone

Create a new repository instance that is a copy of another.

2. Push

Copy changesets from a local repository instance to a remote one.

3. Pull

Copy changesets from a remote repository instance to a local one.

4. Directed Acyclic Graphs (DAGs)

In order to support the ability to push and pull changesets between multiple instances of the same repository, we need a specially designed structure for representing multiple versions of things. The structure we use is called a Directed Acyclic Graph (DAG), a design which is more expressive than a purely linear model. The history of everything in the repository is modeled as a DAG.