Update run.sh

run.sh

@@ -55,8 +55,8 @@ if [ "${1}" == "update" ]; then
 			else
 				echo -e "${idsCL[LightCyan]}Installing mediamanager updates...${idsCL[Default]}"
 			fi
-			git fetch origin master >/dev/null 2>&1
-			git reset --hard origin/master >/dev/null 2>&1
+			git fetch origin ${gb} >/dev/null 2>&1
+			git reset --hard origin/${gb} >/dev/null 2>&1
 			git reflog expire --expire=now --all >/dev/null 2>&1
 			git repack -ad >/dev/null 2>&1
 			git prune >/dev/null 2>&1