That may be the case, but the Git notion of a "commit" is a domain concept that is unrelated to, and incompatible with, the distsys notion of a "commit". And terminology like "strict serialization" and "snapshot isolation" and so on -- which this system and its docs reference -- are distsys concepts, not Git concepts. So "commit" needs to abide distsys rules, not Git rules, as you can't really mix-and-match definitions across domains.