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docs: describe the scraper --revision option

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Abdessamad Derraz committed 2026-11-11 14:31:31 +01:00
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@@ -97,13 +97,14 @@ Returned by `compare_with_config()`. Contains:
### scraper_cli
`scraper_cli(scraper_class, description)` provides a shared CLI with three modes:
`scraper_cli(scraper_class, description)` provides a shared CLI:
| Flag | Behavior |
|------|----------|
| `--dry-run` | Fetch and print a summary grouped by system |
| `--json` | Output all requirements as JSON |
| `--output FILE` | Write platform YAML to FILE |
| `--revision REF` | Read a branch head or a commit instead of the revision the platform file pins. Offered only to a scraper whose constructor takes `revision` (RetroBat), and passed by `check_freshness.py` and `refresh_stale.py` from the registry's `rescrape_args` |
When `--output` targets an existing file, every top-level key the scraper writes
is replaced and the others are kept, as is a system's `data_directories` the new