An early version of Claude Code did a hard reset on one of my projects and force pushed it to GitHub. The pushed code was completely useless, and I lost two days of work.
It is definitely smarter now, but make sure you set up branch protection rules even for your simple non-serious projects.
I don’t let Claude touch git at all, unless I need it to specifically review the log - which is rare. I commit manually often (and fix up the history later) - this allows me to go reasonably fast without worrying too much about destructive tool use.