The angle of the ground will affect the how the ball will travel in flight. The higher the slope the higher the ball will come off of the club. The adjustment is to use a lower lofted club so it will come out like a lesser lofted club off of normal ground. Your expected height of the shot will match your usual reference and the reaction when hitting the green.
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Hitting from an uphill lie near the green can be tricky for gauging distance. Any tips for this shot?