Stix2arango MITRE ATT&CK source repository query

I see MITRE ATT&CK maintain 2 repositories of STIX data

and

What is the difference between the two, if any? And if there is a difference, which version does the stix2arango code use for these scripts?

GitHub - mitre/cti: Cyber Threat Intelligence Repository expressed in STIX 2.0 contains ATT&CK data as STIX 2.0 objects.

GitHub - mitre-attack/attack-stix-data: STIX data representing MITRE ATT&CK uses STIX 2.1.

stix2arango uses the 2.1 versions of the objects.