Avoid fail on git error

[joezuntz]

No description provided.

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (55b4bd1) 59.88% compared to head (3b48b84) 59.86%.

Files	Patch %	Lines
cosmosis/utils.py	81.25%	3 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #110      +/-   ##
==========================================
- Coverage   59.88%   59.86%   -0.02%     
==========================================
  Files         115      115              
  Lines       11842    11846       +4     
==========================================
+ Hits         7091     7092       +1     
- Misses       4751     4754       +3     

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