The recommended way for our NCC member's to repair a fairway divot is to fill the divot by using the mixture in the sand and seed bottles. This is the preferred repair method. Too often if the golfer places the turf back in the divot, there is not a solid turf to soil contact and warm air dries the turf, dies, and leaves an unsightly dead area of brown grass.
The photo below shows the correct way to fill a fairway divot. Sand is used to fill the divot and then you can use your foot to smooth it level with the surrounding turf.
The photo below shows an example of where the turf was placed back into a fairway divot. The turf died and turned brown.