Improve handling of incorrect repo_path configs

[klieret]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 26.66667% with 11 lines in your changes are missing coverage. Please review.

Project coverage is 76.06%. Comparing base (b96aea4) to head (665bc0a).
Report is 1 commits behind head on main.

Files	Patch %	Lines
sweagent/environment/utils.py	21.42%	11 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #340   +/-   ##
=======================================
  Coverage   76.06%   76.06%           
=======================================
  Files          18       18           
  Lines        2874     2875    +1     
=======================================
+ Hits         2186     2187    +1     
  Misses        688      688           

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