Brickstore database generation issues and map request

[Dalchrome]

Hi, The brickstore-database git doesn't have anywhere to ask questions so I'm asking here. I cloned the git and tried running the action but it throws up
invalid reference format Error: Process completed with exit code 1.
Is there anything special I need to be doing to make the action work? I
Also is there a map of the data, and are there currently any plans to change the databases in the future?
Thanks