Unless you opt-out before April 24th, your GitHub code and data will be used for Microsoft's AI training.
https://github.blog/news-insights/company-news/updates-to-github-copilot-interaction-data-usage-policy/
Updates to GitHub Copilot interaction data usage policy

From April 24 onward, interaction data from Copilot Free, Pro, and Pro+ users will be used to train and improve our AI models unless they opt out.

The GitHub Blog
@sleepyfox @AmelieCornelis I’m not telling you to do that, but imagine if people created hundreds, thousands of repositories full of garbage code that doesn’t make any sense?