Green’s Dictionary of Slang

pitchy-patchy n.

[SE patch + redup.; note Pitchy-Patchy, a character dressed in strips of ragged colourful cloth, who played a part in the 19C Jam. Jonkonnu celebrations]
(W.I.)

1. ragged old work-clothes.

[US]F.G. Cassidy ‘Iteration as a Word-forming Device in Jamaican Folk Speech’ in AS XXXII:1 53: pitchy-patchy, covered with patches.

2. one who is wearing them.

[WI]cited in Cassidy & LePage Dict. Jam. Eng. (1980).