"different version available"

[Virsacer]

Hi,
I have downloaded broadcast.csv and memory.csv for local use.

curl --remote-name --remote-time https://ebus.github.io/en/broadcast.csv
curl --remote-name --remote-time https://ebus.github.io/en/memory.csv

But after some time I get this message:

[main notice] update check: OK, broadcast.csv: different version available, memory.csv: different version available

So, what exaclty does "different" mean?
And where do I get the "correct" versions?

Thanks