fix(remote): avoid setting multiple remotes

[orhun]

Motivation and Context

Fixes orhun/git-cliff-action#39 and potentially #863

How Has This Been Tested?

Locally.

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 30 lines in your changes missing coverage. Please review.

Project coverage is 40.04%. Comparing base (a5786be) to head (f77c1d3).

Files with missing lines	Patch %	Lines
git-cliff/src/lib.rs	0.00%	22 Missing ⚠️
git-cliff-core/src/config.rs	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #885      +/-   ##
==========================================
+ Coverage   39.97%   40.04%   +0.08%     
==========================================
  Files          21       21              
  Lines        1674     1671       -3     
==========================================
  Hits          669      669              
+ Misses       1005     1002       -3     

Flag	Coverage Δ
unit-tests	40.04% <0.00%> (+0.08%)	⬆️

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