This script generates a single Git repository that contains all Git repositories in GitHub. This huge union repository is convenient for datamining and other analytics.
git clone http://git.jenkins-ci.org/all.git to clone this repository. For each branch foo in the repository http://github.com/jenkinsci/bar, the union repository contains bar/foo. The same naming convention applies for tags.
Also see clone.groovy if you prefer to check out separate repositories with working copies.