Reload a div on webhook response

I’m writing code in express.js. Here I want to reload a div on the webhook response.

Here is a sample piece of my code.

server.js

router.post("/reviews", async (req, res) => {
  console.log(req.body.review.comments); 
});

This block triggers perfectly whenever there is an action happening at my webhook.
I use the below HTML to post the data and whenever there is a response, I want to refresh it(Getting data on refresh is handled and is working fine, tested this when I am posting data).

sample.html

<div id="reviewsWrapper">
 <div class="reviewsContainer" id="reviewsContainer">
  New Review Received
 </div>
</div>

<script>
    var mainForm = document.querySelector('#form');
    mainForm.addEventListener("submit", handleFormSubmit);

    async function handleFormSubmit(event) {
        event.preventDefault();
        const form = event.currentTarget;
        const url = form.action;
        try {
            const formData = new FormData(form);
            const data = JSON.stringify(Object.fromEntries(formData));

            const config = {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: data,
            };

            const rawResponse = await fetch(url, config);
            const content = await rawResponse.json();
            if (content)
                $('#reviewsWrapper').load(location.href + ' #reviewsWrapper>*')
        } catch (error) {
            console.error(error);
        }
    }

</script>

I want to understand, whenever I have a new action in my webhook, how can I refresh my div(reviewsWrapper)?

Thanks