plistlib can't decode date from year 0

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-06-22.22:42:45.413>
labels = ['OS-mac', '3.8', 'type-bug', 'library']
title = "plistlib can't decode date from year 0"
updated_at = <Date 2020-06-23.17:24:51.579>
user = 'https://github.com/shields-fn'

bugs.python.org fields:

activity = <Date 2020-06-23.17:24:51.579>
actor = 'shields-fn'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)', 'macOS']
creation = <Date 2020-06-22.22:42:45.413>
creator = 'shields-fn'
dependencies = []
files = []
hgrepos = []
issue_num = 41083
keywords = []
message_count = 5.0
messages = ['372131', '372151', '372152', '372159', '372185']
nosy_count = 4.0
nosy_names = ['ronaldoussoren', 'christian.heimes', 'ned.deily', 'shields-fn']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue41083'
versions = ['Python 3.8']