Samsung has been seeding its Android 10 beta with One UI 2 for a while now and the latest countries to join in are India, Poland, and France. Those who’ve registered for beta testing through the Samsung Members app will be able to receive the update over the air.
The Indian version, in particular, comes with the G975FXXU3ZSJF build number and weighs in at just over 1.9 GB. Interestingly enough the update comes with the November security patch. As always when dealing with betas, it's better to back up all your data. Samsung is expected to issue the second Android 10 beta soon.