fix(deployment): skip redundant Git operations

[kimdre]

optimize repository cloning by tracking clone state to skip redundant operations

[codecov]

Codecov Report

❌ Patch coverage is 17.77778% with 37 lines in your changes missing coverage. Please review.
✅ Project coverage is 37.43%. Comparing base (12c8d9e) to head (2b8e2f8).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/stages/stage_1_init.go	0.00%	28 Missing ⚠️
internal/stages/types.go	0.00%	7 Missing ⚠️
internal/git/git.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #980      +/-   ##
==========================================
- Coverage   37.52%   37.43%   -0.09%     
==========================================
  Files          69       69              
  Lines        4792     4824      +32     
==========================================
+ Hits         1798     1806       +8     
- Misses       2694     2718      +24     
  Partials      300      300              

Flag	Coverage Δ
unittests	37.43% <17.77%> (-0.09%)	⬇️

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