Nasty way to add every fork of a GitHub repository

github-add-every-repo-in-network.rb

#!/usr/bin/env ruby
# Nasty way to add every fork of a GitHub repository

if ARGV.size != 2
  puts "Use: #$0 owner repository"
  exit 1
end

current_remotes = File.read(".git/config").scan(/\[remote "(.*?)"\]/).flatten

require 'json'

JSON.parse(`GET https://github.com/#{ARGV[0]}/#{ARGV[1]}/network/members.json`)["users"].each do |item|
  owner = item["owner"]["login"]
  if not current_remotes.include?(owner)
    git_url = "git://github.com/#{owner}/#{ARGV[1]}.git"
    puts "Adding #{owner}: #{git_url}"
    system "git remote add #{owner} #{git_url}"
  end
end

To fetch every remote:

$ git remote | xargs -l1 git fetch