setuptools_scm: Built wheel is invalid: Metadata 1.2 mandates PEP 440 version, but '0.0.2.dev1.post1.dev2-g8fd2842' is not

Attempting to run tox tests on a library I am building is throwing the below error:

Processing ./.tox/.tmp/package/1/python-step-series-0.0.2.dev1.post1.dev2-g8fd2842.tar.gz
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'done'
    Preparing wheel metadata: started
    Preparing wheel metadata: finished with status 'done'
Building wheels for collected packages: python-step-series
  Building wheel for python-step-series (PEP 517): started
  Building wheel for python-step-series (PEP 517): finished with status 'done'
  Created wheel for python-step-series: filename=python_step_series-0.0.2.dev1.post1.dev2_g8fd2842-py3-none-any.whl size=18021 sha256=7c172e5d554075b0c12255e06be171c067edf4569bb621c5fa573070d39d581d
  Stored in directory: /home/user/.cache/pip/wheels/d1/5f/e0/84fd855c772a59469c7065c94464233a7532667a9c94430803
  WARNING: Built wheel for python-step-series is invalid: Metadata 1.2 mandates PEP 440 version, but '0.0.2.dev1.post1.dev2-g8fd2842' is not
Failed to build python-step-series
ERROR: Could not build wheels for python-step-series which use PEP 517 and cannot be installed directly

I believe it is being caused by the warning I’ve titled this issue with. I just started getting this error this morning and am completely stuck on why I am all of a sudden seeing it. I looked at #278 as it seemed similar, but was not. Regardless, as like in that issue, here are the outputs for git tag, git describe and git status:

git tag:

0.0.2dev0
0.0.2dev1
v0.0.1

git describe:

0.0.2dev0-6-g8fd2842

git status:

On branch 0.0.2
Your branch is up to date with 'origin/0.0.2'.

nothing to commit, working tree clean

Curiously, creating a new tag (i.e. 0.0.2dev2) will allow me to run the tests until my working tree gets dirty again, so creating a new tag every time I want to test isn’t viable nor proper.

I am 100% stuck, so please let me know what I can do to rectify this if you are able. Jules