fix version traceback in python 3.12

[nosarthur]

close #275

[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.

Project coverage is 84.81%. Comparing base (8c17759) to head (6fc34eb).

Files	Patch %	Lines
gita/__init__.py	50.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #276      +/-   ##
==========================================
- Coverage   85.27%   84.81%   -0.47%     
==========================================
  Files           6        6              
  Lines         815      823       +8     
==========================================
+ Hits          695      698       +3     
- Misses        120      125       +5     

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