I claim the ornamental design for a head garment, as shown and described.
FIG. 1 is a perspective view of a head garment showing my new design; the broken lines in this figure of a person's head illustrate environmental matter and form no part of the claimed design;
FIG. 2 is an outside elevation view of the head garment of FIG. 1 laid out flat;
FIG. 3 is a left-side elevation view thereof, the right-side elevation view being a mirror image thereof;
FIG. 4 is an inside elevation view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom elevation view thereof.
The pockets shown in broken lines in FIGS. 2 and 4 illustrate environmental matter, and form no part of the claimed design. The crosshatched strips shown in FIGS. 2 and 4 illustrate hook-and-loop fasteners, and form a part of the claimed design.