ImportError from click causes pre-commit to fail

[mayaCostantini]

Describe the bug
See #1733 (comment) and #1730 (comment)

To Reproduce
Open a PR in this repository and see the error for the black check.

Expected behavior
pre-commit check passes.

Additional context
Error log in Prow for #1733:

black....................................................................Failed
- hook id: black
- exit code: 1
Traceback (most recent call last):
  File "/opt/app-root/src/.cache/pre-commit/repohvodjssb/py_env-python3/bin/black", line 8, in <module>
    sys.exit(patched_main())
  File "/opt/app-root/src/.cache/pre-commit/repohvodjssb/py_env-python3/lib/python3.8/site-packages/black/__init__.py", line 1127, in patched_main
    patch_click()
  File "/opt/app-root/src/.cache/pre-commit/repohvodjssb/py_env-python3/lib/python3.8/site-packages/black/__init__.py", line 1113, in patch_click
    from click import _unicodefun  # type: ignore
ImportError: cannot import name '_unicodefun' from 'click' (/opt/app-root/src/.cache/pre-commit/repohvodjssb/py_env-python3/lib/python3.8/site-packages/click/__init__.py)

[mayaCostantini]

/priority critical-urgent

[mayaCostantini]

It looks like the issue is recent and was raised in the click repository: pallets/click#2232