@mitu i have right now turn on my Pi4.
Open "Retropie-setup" and update my script to current commit (2d07a999).

After that i did:

Manage -> Core -> and select "Update all installed core".
I can't find any updates. So exit from retropie-setup and emulationstation still at 2.10.1 :)

At this point i have tryed to update emulationstation manually.... i did:
Manage -> Core -> Select "Emulationstation" - > re-installed manually from binary

Now need to check if it's correctly updated :)

EDIT
OOOOKKK... my ES been updated to v2.10.2 whitout any issue.