You can view basic information about a repository, such as the repository's activity and contribution activity.
About repository graphs
Repository graphs help you view and analyze data for your repository.
Viewing a summary of repository activity
You can view an overview of a repository's activity through Pulse. Pulse includes a list of open and merged pull requests, open and closed issues, and a graph showing the commit activity for the top 15 users who committed to the default branch of the project in the selected time period.
Viewing contribution activity in a repository
You can view the top 100 contributors to a repository in the Contributors graph. Merge commits and commits that don't include changes aren't included in this graph.