The ResetToTargetPaths feature in the inter-branch merge workflow had three issues: commits failed due to missing git identity, git ls-tree doesn't support wildcards/globs, and each pattern created a separate commit.

Changes

• Git identity: Configure github-actions[bot] user before committing to prevent authentication failures
• Pattern matching: Remove git ls-tree check and use git checkout directly, which natively handles wildcards and glob patterns
• Single commit: Accumulate all pattern checkouts, then create one commit listing all patterns (each on a separate line) instead of multiple commits

Example

With patterns ["*.txt", "docs/**/*.md"], the workflow now produces:

Reset files to main

Reset patterns:
- *.txt
- docs/**/*.md

Instead of two separate commits with individual pattern names.

To double check:

• The right tests are in and the right validation has happened. Guidance: https://github.com/dotnet/arcade/blob/main/Documentation/Validation.md

• Fixes Issues to fix in inter-branch merge workflow #16394

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