Checkouts stale following changes to .gitattributes

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-07-30.14:21:05.787>
labels = ['docs']
title = 'Checkouts stale following changes to .gitattributes'
updated_at = <Date 2021-07-31.13:27:52.992>
user = 'https://github.com/jaraco'

bugs.python.org fields:

activity = <Date 2021-07-31.13:27:52.992>
actor = 'eamanu'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Documentation']
creation = <Date 2021-07-30.14:21:05.787>
creator = 'jaraco'
dependencies = []
files = []
hgrepos = []
issue_num = 44779
keywords = ['patch']
message_count = 1.0
messages = ['398552']
nosy_count = 4.0
nosy_names = ['jaraco', 'jkloth', 'docs@python', 'eamanu']
pr_nums = ['27436']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue44779'
versions = []