Redmi is reportedly pushing an official Android Q build to some owners of the K20 Pro in China. These users had been invited to apply to a beta program to test this ROM earlier in the year. Therefore, this phone may have joined the Xiaomi Mi 9 in eligibility for advance access to this major OS update.
https://www.notebookcheck.net/Redmi-K20-Pro-reportedly-gets-Android-Q-beta-in-China.429478.0.html