Magento 2.3 – How to Set Qty for Multiple Sources Programmatically

$sourceItemsBySku = $this->getSourceItemsBySku->execute($product->getSku());
$config['stockData'][$productId] = [];

foreach ($sourceItemsBySku as $sourceItem) {
    $source = $sourceItem->getSourceCode();
    $quantity = $sourceItem->getQuantity();

    $config['stockData'][$productId][$source] = $quantity;
}

Can you please set stock data this way in Magento 2.3

Also please inject product and productRepository like following

$_product->setStockData(
     [
        'use_config_manage_stock' => 0,
        'qty' => $productData['stock'],
        'is_qty_decimal' => 0,
        'manage_stock' => 1,
        'is_in_stock' => $productData['is_in_stock']
     ]
    );

UPDATE

I have tried this way and its working fine for me, Check this screenshot for more information : https://prnt.sc/me62gf and this https://prnt.sc/me637c

Check my controller below.

namespace Vendor\Module\Block\Index;

class Index extends \Magento\Framework\View\Element\Template
{

    protected $_productFactory;

    /**
     * Constructor
     *
     * @param \Magento\Framework\View\Element\Template\Context  $context
     * @param array $data
     */
    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Catalog\Model\ProductFactory $productFactory,
        array $data = []
    ) {
        parent::__construct($context, $data);
        $this->_productFactory = $productFactory;
    }

    public function FunctionName()
    {
        $_product = $this->_productFactory->create();

        $mainImage = "";
        $imagesToImport = "";

        $urlKey = $this->geturlKey('url_key');
        $_product->setName('name');
        $_product->setTypeId('simple');
        $_product->setAttributeSetId(4);
        $_product->setCategoryIds([]);
        $_product->setSku('psku');
        $_product->setStatus(2);
        $_product->setUrlKey('url_key');
        $_product->setWebsiteIds([1]);
        $_product->setVisibility(4);
        $_product->setDescription('description');
        $_product->setShortDescription('short_description');
        $_product->setPrice(30.3);
        //if (isset($productData['special_price'])) {
            $_product->setSpecialPrice(20.6);
            $_product->setSpecialFromDate(''); //special price from (MM-DD-YYYY)
            $_product->setSpecialToDate(''); //special price to (MM-DD-YYYY)
        //}
        $_product->setMetaTitle('meta_title');
        $_product->setMetaKeyword('meta_keyword');

        $_product->setWeight('1.0');
        $_product->setMetaDescription('meta_description');

        $_product->setColor('color');
        $_product->setManufacturer('manufacturer');
        $_product->setStockData(
            [
                'use_config_manage_stock' => 0, //'Use config settings' checkbox
                'manage_stock' => 1, //manage stock
                'is_in_stock' => 1, //Stock Availability
                'qty' => 100, //qty
            ]
        );
        //echo "<pre>";print_r($_product->debug()); exit();
        $_product->save();
    }
}