I understand you're looking for the HTML link for the new image you've uploaded. To find this link, simply access your Files('Settings > Files'). From there, look for the new image and click the link icon on the right of the image.
After that, the link is coped and you can simply paste it to replace the the link in your theme's code.
I'd love to know if this can help you find the link that you're looking for. Let me know!
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