PyInstanceMethod_Type isn't hashable

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2016-11-30.18:26:33.954>
labels = ['interpreter-core', 'type-feature', '3.11']
title = "PyInstanceMethod_Type isn't hashable"
updated_at = <Date 2021-11-30.16:58:14.601>
user = 'https://github.com/wolever'

bugs.python.org fields:

activity = <Date 2021-11-30.16:58:14.601>
actor = 'iritkatriel'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2016-11-30.18:26:33.954>
creator = 'wolever'
dependencies = []
files = []
hgrepos = []
issue_num = 28842
keywords = []
message_count = 2.0
messages = ['282091', '282094']
nosy_count = 2.0
nosy_names = ['wolever', 'josh.r']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue28842'
versions = ['Python 3.11']