I used a similar technique for a less frivolous task. I had script dumping data in text format, and wanted to refactor it. I committed the result and c

I used a similar technique for a less frivolous task. I had script dumping data in text format, and wanted to refactor it. I committed the result and could refactor brutally step by step, running the script at each step and reverting whenever the dumped data showed some diffs.