This SO post goes into how to use git checkout --orphan to create a new branch whose history is totally separate from the "main" one. This other SO post shows how to do something similar with Git ...

Learn Git and GitHub fast Furthermore, this Git and GitHub tutorial explores many of the features GitHub provides over and above what comes with a standard Git installation. These include the ...

Microsoft has rolled its Git Virtual File System and Scalar optimizations into a fork of Git designed to support enormous repos and large distributed teams.