Leverage git clone #21
Description
VFS for Git (VFS4G) is a tool that could eventually allow us to get the commit history of repoS that are huge.
Both GitLab and GitHub are currently implementing support for VFS4G.
(GitHub: https://stackoverflow.com/questions/37684028/how-to-clone-fetch-a-repo-getting-only-the-history and GitLab: https://gitlab.com/gitlab-org/gitlab-ce/issues/27895)
Also, the GitHub API gives us the disk usage of a repo. This means we can git clone and get the commit history of small repoS.