For the upper chest, you'd have to work the clavicular head of the pec minor
Narrow grip incline press
"A group of Australian scientists examined the effects of different bench angles and grip widths on muscle activity around the shoulder. For example, in comparing two functionally distinct regions of the pectoralis major muscle (i.e., clavicular head and sternocostal head), they found that the clavicular head of the pec major (the part attached to the collarbone or clavicle) was more active during a narrow grip vs. wide grip, esp. during the flat and incline bench press. Relative to the sternocostal head, the clavicular head was more active during a narrow grip incline bench. On the other hand, the sternocostal head of the pec major (part attached to the breastbone or sternum) showed its greatest activity during a flat bench; however, if you wanted greater relative involvement of the sternocostal head vs. the clavicular head, a decline press with a narrow grip seemed to work best. And for best maximal involvement of the entire pectoralis major muscle, the wide grip flat bench resulted in the greatest measured electrical activity."