Fix export (#165)

* fix script

* fix script

* fix script

* Update github_scripts/get_git_sources.py

Co-authored-by: Yaswant Pradhan <2984440+yaswant@users.noreply.github.com>

---------

Co-authored-by: Yaswant Pradhan <2984440+yaswant@users.noreply.github.com>

Author: james-bruten-mo

github_scripts/get_git_sources.py

@@ -165,8 +165,8 @@ def sync_repo(repo_source: str, repo_ref: str, loc: Path) -> None:
     # Ignore errors - these are likely because the main branch already exists
     # Instead write them as warnings
     command = f"git -C {loc} fetch origin main:main"
-    result = run_command(command, check=False, rval=True)
-    if result.returncode:
+    result = run_command(command, check=False)
+    if result and result.returncode:
         print("Warning - fetching main from origin resulted in an error")
         print("This is likely due to the main branch already existing")
         print(f"Error message:\n\n{result.stderr}")