Apply suggestions from code review

Author: Byron

Diff for: git/cmd.py

@@ -477,8 +477,8 @@ def refresh(cls, path: Union[None, PathLike] = None) -> bool:
 
                 # We get here if this was the initial refresh and the refresh mode was
                 # not error. Go ahead and set the GIT_PYTHON_GIT_EXECUTABLE such that we
-                # discern the the difference between the first refresh at import time
-                # and subsequent calls to refresh.
+                # discern the difference between the first refresh at import time
+                # and subsequent calls to refresh().
                 cls.GIT_PYTHON_GIT_EXECUTABLE = cls.git_exec_name
             else:
                 # After the first refresh (when GIT_PYTHON_GIT_EXECUTABLE is no longer