Updating assets/lib submodule

[Hrovatin]

Checklist

• I have read and accepted the contributing guidelines.

Description

I tried to update the submodule assets/lib via the below command, following the starter update guide
git -C assets/lib merge 02f4ada65dc75197654c3265a37a6f5fbc39f17c
But get the error
merge: 02f4ada65dc75197654c3265a37a6f5fbc39f17c - not something we can merge

As hash commit I took the latest one from the assets repo. I also ran the fetch before as specified in the update guide (the rest of the page got updated correctly).

Any ideas on how to resolve?