Hook installs an ancient version of black

[joshtemple]

When I run pre-commit run -v for my black hook, I see the following output:

[WARNING] Unstaged files detected.
[INFO] Stashing unstaged files to /Users/joshuat/.cache/pre-commit/patch1599590125.
black....................................................................Passed
- hook id: black
- duration: 0.22s

black, version 0.1.dev1+g2354126

Here's the config file.

repos:
  - repo: https://github.com/psf/black
    rev: 20.8b1
    hooks:
      - id: black
        language_version: python3
        args: [--version]

Why isn't pre-commit installing the correct version of Black? I've tried running pre-commit clean and reinstalling, but it still shows the old version.

[asottile]

the version is bogus, this is due to setuptools-scm not knowing what's up

[asottile]

(it's actually 20.8b1, you can verify using the --help and checking for the new options)

[asottile]

also that the g version matches the tag: https://github.com/psf/black/releases/tag/20.8b1