class Dependabot::GitMetadataFetcher

def fetch_upload_pack_for(uri)
  response = fetch_raw_upload_pack_for(uri)
  return response.body if response.status == 200
  response_with_git = fetch_raw_upload_pack_with_git_for(uri)
  return response_with_git.body if response_with_git.status == 200
  raise Dependabot::GitDependenciesNotReachable, [uri] unless uri.match?(KNOWN_HOSTS)
  raise "Unexpected response: #{response.status} - #{response.body}" if response.status < 400
  if uri.match?(/github\.com/i)
    response = response.data
    response[:response_headers] = response[:headers]
    raise Octokit::Error.from_response(response)
  end
  raise "Server error at #{uri}: #{response.body}" if response.status >= 500
  raise Dependabot::GitDependenciesNotReachable, [uri]
rescue Excon::Error::Socket, Excon::Error::Timeout
  raise if uri.match?(KNOWN_HOSTS)
  raise Dependabot::GitDependenciesNotReachable, [uri]
end