Perjury laws. Once a judge has commanded you to give the same AI, you either give the same AI, or truthfully explain that you can't. Any deviation from that and everyone complicit is risking jail time, not just money.
"this is the June 2020 version, this is the current version, we have no back ups in between" is acceptable if true. Destroying or omitting an existing version is not.
Not that not having backups is something that you can sue the company for as an investor. If you say we have the June 2020 version, but not the july one you asked for you are fine, (it is reasonable to have save daily backups for a month, monthly backups for a year, and then yearly backups). Though even then I might be able to sue you for not having version control of the code.
"this is the June 2020 version, this is the current version, we have no back ups in between" is acceptable if true. Destroying or omitting an existing version is not.