change path in the subprocess call

[nosarthur]

fix #240

[codecov]

Codecov Report

Patch coverage: 96.29% and project coverage change: -0.35 ⚠️

Comparison is base (619926e) 87.56% compared to head (635c073) 87.21%.

❗ Current head 635c073 differs from pull request most recent head c367ddc. Consider uploading reports for the commit c367ddc to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #241      +/-   ##
==========================================
- Coverage   87.56%   87.21%   -0.35%     
==========================================
  Files           5        5              
  Lines         756      751       -5     
==========================================
- Hits          662      655       -7     
- Misses         94       96       +2     

Impacted Files	Coverage Δ
gita/info.py	96.19% <96.15%> (-1.93%)	⬇️
gita/utils.py	82.44% <100.00%> (-0.27%)	⬇️

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