An ornamentaldesign for a golf brush, as shown and described.
FIG. 1 is a right side view of a golf brush according to the present design;
FIG. 2 is a left side view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is another right side view thereof shown in an alternate state of use.
The broken line showing of a bottle in the FIG. 7 drawing view is included for the purpose of illustrating environment of the article and forms no part of the claimed design.