Tom wonders if the painter will be able to disguise the small holes in the walls.
The author from Tatoeba updated the Indonesian sentence as follows:
Old (current Clozemaster version): Tom penasaran apakah tukang cat itu bisa menyamarkan lubang pada dinding-dinding yang ada.
New (current Tatoeba version): Tom penasaran apakah tukang cat itu bisa menyamarkan lubang pada dinding-dindingnya.
I also think that “yang ada” from the old version is grammatically half-broken.