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GitHub ubuntu-latest recycles inode numbers on rapid unlink+create, causing a false cache hit when size+mtime match. Churn dummy files until f.txt gets a genuinely new ino so the test reliably forces a re-hash.
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GitHub ubuntu-latest recycles inode numbers on rapid unlink+create, causing a false cache hit when size+mtime match. Churn dummy files until f.txt gets a genuinely new ino so the test reliably forces a re-hash.