alt Hacker NewsVersion control might not be a big deal if you are all-in on the database.
Stored procedures are easiest to version by simply defining multiple variants and then incrementally moving the callers in the direction you want. The durability comes from (hopefully) your backups. Point-in-time-recovery is often easier for the business to reason about than a git repository.
Having worked for a business that made a serious go of running everything out of stored procedures, I have to say that lack of version control was a huge problem and effectively limited all development to a single person who held all the rules in their head.