Hi,
maybe you can check the timestamp of the dataserver executable (in directory ASE-***/bin).
I don't know whether there are other methods as applying hot fixes e.g. (ASE 16.0 SP02 PL01 HF1 for example) requires copying files manually. This is done with the "cp -rp ...." command on operating system level. The mentioned HF1 only replaces the dataserver executable. So there is no upgrade application started that might update a repository.
Best regards,
Juergen