chore(ci): show git status when dirty working tree

[andrewrynhard]

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@4a6cc1c). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #74   +/-   ##
=========================================
  Coverage          ?   60.78%           
=========================================
  Files             ?        1           
  Lines             ?       51           
  Branches          ?        0           
=========================================
  Hits              ?       31           
  Misses            ?       15           
  Partials          ?        5

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