according to the included /META-INF/com/google/android/updater-script,
e-3.2-t-20251026540684-community-lancelot.zip
for lancelot, galahad, shiva is builded on top of
Redmi/lancelot_global/lancelot:11/RP1A.200720.011/V12.5.6.0.RJCMIXM
so Android 11-R, MIUI 12 from july 2020.