Add --run-github-repo to artifact_manager.py

[ScottTodd]

Motivation

As I'm working on #4441, I want a way to fetch artifacts from workflow runs from ROCm/TheRock, even when running workflows from a fork like ScottTodd/TheRock. See also the docs at https://github.com/ROCm/TheRock/blob/main/docs/development/github_actions_debugging.md#working-effectively-from-forks

Technical Details

The bucket selection code used by this script has been treating workflow run ids as being associated with a default value of GITHUB_REPOSITORY (the environment variable).

This new code matches the existing pattern used for fetch_artifacts.py:

TheRock/build_tools/fetch_artifacts.py

Lines 329 to 339 in 8ae8a96

	parser.add_argument(
	"--run-github-repo",
	type=str,
	help="GitHub repository for --run-id in 'owner/repo' format (e.g. 'ROCm/TheRock'). Defaults to GITHUB_REPOSITORY env var or 'ROCm/TheRock'",
	)
	parser.add_argument(
	"--run-id",
	type=str,
	required=True,
	help="GitHub run ID to retrieve artifacts from",
	)

Test Plan

Try running a workflow in my fork with and without the new option, check that runs are now able to find artifacts.

Test Result

Before: https://github.com/ScottTodd/TheRock/actions/runs/24205465226/job/70660041372
After: https://github.com/ScottTodd/TheRock/actions/runs/24205988455/job/70661826987

  python build_tools/build_tarballs.py \
    --run-id="24164769563" \
+   --run-github-repo="ROCm/TheRock" \
    --dist-amdgpu-families="gfx1151;gfx110X-all" \
    --platform="linux" \
    --package-version="7.13.0.dev0+83ae8235312791cd7302e3f50c9935887d62b5a3" \
    --output-dir="/home/runner/work/TheRock/TheRock/tarballs"

 Retrieving bucket info for workflow run...
-  github_repository: ScottTodd/TheRock
+  github_repository: ROCm/TheRock
   is_pr_from_fork: False
-  bucket: therock-ci-artifacts-external
+  bucket: therock-ci-artifacts
 Using backend: s3://therock-ci-artifacts-external/ScottTodd-TheRock/24164769563-linux
-Found 0 artifacts in backend
+Found 400 artifacts in backend

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[erman-gurses]

LGTM. The new --run-github-repo option is correctly wired through artifact_manager.py, and the workflows (Linux, Windows, and test_artifacts_structure) now pass artifact_github_repo explicitly. This resolves the fork vs main repo artifact lookup issue.