Update install-esp-idf.sh

Author: Jason2866

tools/install-esp-idf.sh

@@ -18,8 +18,8 @@ if [ -z "$IDF_PATH" ]; then
 	if ! [ -d esp-idf ]; then
                 echo "git clone $IDF_REPO_URL -b $IDF_BRANCH"
 		git clone $IDF_REPO_URL -b $IDF_BRANCH
-		echo "git -C "$IDF_PATH" checkout e8af343d93b8fe409f6b793e955c608d4f75607b"
-		git -C "$IDF_PATH" checkout e8af343d93b8fe409f6b793e955c608d4f75607b
+		echo "git -C "$IDF_BRANCH" checkout e8af343d93b8fe409f6b793e955c608d4f75607b"
+		git -C "$IDF_BRANCH" checkout e8af343d93b8fe409f6b793e955c608d4f75607b
 	fi
 	export IDF_PATH="$AR_ROOT/esp-idf"
 fi