message: another decode...
  I went through more thoroghly this time I think I gotem all
  Cr-Commit-Position: refs/heads/main@{#36050}
diff: @@ -450,7 +450,7 @@ def CalculateChangedClang(new_cr_rev):
  raise RollError('Could not parse Clang revision!')
  with open(CLANG_UPDATE_SCRIPT_LOCAL_PATH, 'rb') as f:
  - current_lines = f.readlines()
  + current_lines = f.readlines().decode('utf-8')
  current_rev = GetClangRev(current_lines)
  new_clang_update_py = ReadRemoteCrFile(CLANG_UPDATE_SCRIPT_URL_PATH,
  