Add a new layer above the image, then use the spot healing brush (set to 'sample all layers') and the clone stamp tool (set to 'current and below') to remove the branch and recreate the texture behind it.
Edit to add : Abambo got there first, and with a video, while I was typing. He must be on stronger coffee! 🙂
For @Jay5EF2 : I selected the bear (lasso tool) and used “Edit→Content-Aware Fill”. Works fine in some situations, but here it provides not the result needed. The reason is that the selection is huge compared to the image; therefore you see the editing very well, and definitely, you want to preserve the bear.
ABAMBO | Hard- and Software Engineer | Photographer