gitlab-org--gitlab-foss/config/initializers/5_backend.rb

# GIT over HTTP
require Rails.root.join("lib", "gitlab", "backend", "grack_auth")

# GIT over SSH
require Rails.root.join("lib", "gitlab", "backend", "shell")

# GitLab shell adapter
require Rails.root.join("lib", "gitlab", "backend", "shell_adapter")