Hello,
I had my H1B visa interview in Feb, 2020 and got 221G without any additional information asked. After 1.5 yrs, asked me to submit the passport on Dec 8th, 2020 but after a week CEAC site shows as REFUSED again. what could be the reason? I was expecting it to be ISSUED but REFUSED again 
So no reason or ask for any additional documents in 221g? You will need to wait till you get your passport back.
Yes, No reason or additional documents asked
Ok, I am hoping your visa will be approved.
@Sureshkumar_G : Any update on visa or passport related, what happened further ?
if possible, please provide timeline of events after Feb 2020.