The Patch tool is part of Photoshop's healing tools, used for repairing larger areas, distractions, or blemishes in images. It matches texture, lighting, and shading of sampled pixels to the source area.
Prior to Photoshop CS6, a limitation was you couldn't work on a separate layer with the Patch tool, but CS6 introduced content-aware settings, allowing for working on an empty layer, making it more powerful.
[
add
]
[
|
|
...
]