How to number rows 1,1,1,1,2,2,2,2 in SQL

I am looking to number the rows of my output with four 1’s, then four 2’s etc etc regardless of the value in the rows. My data is sorted by week so I am basically trying to group the weeks into groups of four.

I have tried looking at row_number() but can’t figure out how to do this.
Any help appreciated.

desired output

>Solution :

select WeekCode, Revenue, 1 + (row_number() over (order by WeekCode) - 1) / 4 from Data