The USGA and R&A have provided a clarification that introduces a new Local Rule, allowing players to replace a broken or significantly damaged club, except in cases of abuse.
The Local Rule reverses a change that was implemented under the new Rules of Golf. Prior to 2019, a club damaged during the normal course of play could be replaced during a round. However, that allowance was prohibited when the new Rules went into effect on January 1st. Players were still free to use the damaged club, but couldn't replace it.