1. It's unethical to threaten to sue without an actual intention of suing - lawyers can be disciplined for that. 2. Once you sue, you can't dismiss unilaterall

1. It's unethical to threaten to sue without an actual intention of suing - lawyers can be disciplined for that. 2. Once you sue, you can't dismiss unilaterally once the other side has responded. They can reasonably say "we put money into fighting this - you can't withdraw unless you do it with prejudice, which means you can't bring the same suit again." If there's a dismissal of any kind, that could be submitted to GitHub and they'd be permitted to reinstate the content, unless the court specifically said otherwise. The statute doesn't explicitly say this, but it talks about a lawsuit being filed to restrain infringement - it's obvious that if such a lawsuit is dismissed then that provision is no longer satisfied. I'm satisfied any judge looking at this would agree with my interpretation.