In a medium bowl, sift the flour, cocoa, baking powder, baking soda, and salt. In a large bowl, using an electric mixer, beat the sugar and butter at medium-high speed until light and fluffy, about 2 minutes. Beat in the eggs, one at a time. Beat in the sour cream and vanilla. On low speed, beat in the dry ingredients until just combined, then beat in the coffee. Fold in the cherries and chocolate chips.