Xiaomi only issued a new MIUI 12 update for the global version of the Redmi Note 8 yesterday, but the company has now released another build. This time, the new update is based on MIUI 11 and Android 9.0 Pie, just to confuse matters.
https://www.notebookcheck.net/The-Xiaomi-Redmi-Note-8-receives-a-bizarre-new-update.506060.0.html