[3.13] GH-43374: Fix urlretrieve reporthook to report actual bytes read (GH-142653)#143589

miss-islington wants to merge 1 commit intopython:3.13python/cpython:3.13from

miss-islington:backport-68a01f9-3.13miss-islington/cpython:backport-68a01f9-3.13Copy head branch name to clipboard