Portion of a golf club head

FIG. 1 is an elevational view of a portion of a golf club head showing our new design;

FIG. 2 is a first perspective view thereof;

FIG. 3 is a second perspective view thereof;

FIG. 4 is a toe end view thereof.

FIG. 5 is a bottom perspective view thereof;

FIG. 6 is a heel end view thereof; and,

FIG. 7 is a top view thereof.

The uneven broken lines immediately adjacent to the shaded areas represent unclaimed boundaries of the design. The broken line showings of the remainder of the golf club head are for illustrative purposes only and form no part of the claimed design.