http.client.HTTPResponse raises IncompleteRead on chunked encoding

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-01-17.16:21:17.112>
labels = ['3.8', 'library', '3.9']
title = 'http.client.HTTPResponse raises IncompleteRead on chunked encoding'
updated_at = <Date 2020-01-17.16:29:52.625>
user = 'https://bugs.python.org/Arden'

bugs.python.org fields:

activity = <Date 2020-01-17.16:29:52.625>
actor = 'Arden'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-01-17.16:21:17.112>
creator = 'Arden'
dependencies = []
files = []
hgrepos = []
issue_num = 39371
keywords = []
message_count = 2.0
messages = ['360199', '360200']
nosy_count = 1.0
nosy_names = ['Arden']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue39371'
versions = ['Python 3.8', 'Python 3.9']