Better consistency for git diff pure copy/rename filenames

[twaugh]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.43%. Comparing base (ecb9554) to head (94daf7c).
⚠️ Report is 5 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #120      +/-   ##
==========================================
+ Coverage   82.39%   82.43%   +0.03%     
==========================================
  Files           5        5              
  Lines        4130     4139       +9     
  Branches      983      984       +1     
==========================================
+ Hits         3403     3412       +9     
  Misses        727      727              

Flag	Coverage Δ
unittests	82.43% <100.00%> (+0.03%)	⬆️

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