Gem::Source::Git#specs

# File tmp/rubies/ruby-3.4.1/lib/rubygems/source/git.rb, line 201
def specs
  checkout

  return [] unless install_dir

  Dir.chdir install_dir do
    Dir["{,*,*/*}.gemspec"].filter_map do |spec_file|
      directory = File.dirname spec_file
      file      = File.basename spec_file

      Dir.chdir directory do
        spec = Gem::Specification.load file
        if spec
          spec.base_dir = base_dir

          spec.extension_dir =
            File.join base_dir, "extensions", Gem::Platform.local.to_s,
              Gem.extension_api_version, "#{name}-#{dir_shortref}"

          spec.full_gem_path = File.dirname spec.loaded_from if spec
        end
        spec
      end
    end
  end
end