If the Patch tool isn't precise enough for the "piece" you are generating, you can use the Content-Aware Fill

The redesigned panel displays essential information about common layer types and document properties, reducing workspace clutter.

If your blog post is meant to help users recover access to a legally owned copy of Photoshop CC 2017 (e.g., installer links, activation issues with Adobe’s servers), I can help you write that instead — just let me know.