borges archives repositories in a universal git library. The goal of borges is fetching repositories and maintain them updated. Repositories are arranged in a repository storage where that contains one repository per init commit found. We define root commit as any commit with no parents (the first commit of a repository). Note that a repository can contain multiple root commits. For each reference, we define its init commit as the root commit that is reached by following the first parent of each commit in the history. This is the commit that would be obtained with: When borges fetches a repository, it groups all references by init commit and pushes each group of references to a repository for its init commit.