class Dependabot::GitMetadataFetcher

def parse_refs_for_upload_pack
  peeled_lines = []
  result = T.must(upload_pack).lines.each_with_object({}) do |line, res|
    full_ref_name = T.must(line.split.last)
    next unless full_ref_name.start_with?("refs/tags", "refs/heads")
    (peeled_lines << line) && next if line.strip.end_with?("^{}")
    ref_name = full_ref_name.sub(%r{^refs/(tags|heads)/}, "").strip
    sha = sha_for_update_pack_line(line)
    res[ref_name] = GitRef.new(
      name: ref_name,
      ref_sha: sha,
      ref_type: full_ref_name.start_with?("refs/tags") ? RefType::Tag : RefType::Head,
      commit_sha: sha
    )
  end
  # Loop through the peeled lines, updating the commit_sha for any
  # matching tags in our results hash
  peeled_lines.each do |line|
    ref_name = line.split(%r{ refs/(tags|heads)/})
                   .last.strip.gsub(/\^{}$/, "")
    next unless result[ref_name]
    result[ref_name].commit_sha = sha_for_update_pack_line(line)
  end
  result.values
end