My small helper to update / cleanup local git working copies.

gc.rb

#!/usr/bin/env ruby

require 'yaml'
require 'open3'
# require 'byebug'

COLOUR_RED    = 31
COLOUR_GREEN  = 32
COLOUR_YELLOW = 33

projects = YAML.load_file(File.join(File.dirname(File.expand_path(__FILE__)), "gc.yaml"))

def colour(string, code)
  puts "\e[#{code}m#{string}\e[0m"
end

projects.each do |key, config|
  colour "Project: #{key}", COLOUR_YELLOW

  path   = config['path']
  remote = config['remote']
  branch = config['branch']

  shell = -> (cmd) do
    puts "[+] #{cmd}"
    output, status = Open3.capture2e(cmd, chdir: File.expand_path(path))
    puts output if output.length > 0

    if status.success?
      status_colour = COLOUR_GREEN
    else
      status_colour = COLOUR_YELLOW
    end

    colour "[i] Status: #{status}", status_colour

    output
  end

  shell.call "git fetch --all --prune"
  shell.call "git checkout -B #{branch}"
  shell.call "git reset --hard #{remote}/#{branch}"

  shell.call "git branch"
  shell.call "git branch | grep --invert-match #{branch} | xargs git branch --delete --force"

  puts '-' * 80
end

gc.yaml

---
bar:
  branch: develop
  path: ~/Code/github.com/foo/bar
  remote: origin
baz:
  branch: develop
  path: ~/Code/github.com/foo/baz
  remote: origin