360 Spherical Panorama won't merge down without issues:

I do not have drone and did not  fully view that tutorials.  Where you was to patch out your drone.  I do know why would want to mess with 360 panorama Projection image color.   You want to patch the projection  where the projection is the most distorted. Not practical in a normal image  editing application.  When you use Photoshop 3D spherical panorama feature the projection is manipulated in a 3D Viewer  where you can view and work on the area you want to Patch as if the area was not distorted.  You want to create a patch for the area that is distorted like the area is you want to clone over the area with what is in view and distorted like the ares you are patching. You want to merge down and blend in the Patch as seamlessly as possible.  You are not dealing with a 3D object model base defuse color you are dealing with an image that a 360 spherical panorama projection. you wan the colors in the image to match.  I found an image on the web that need a patch.  I  did no find I had to mess the colors creating a cloned patch. But I have to admit I'm a bit color blind.  My Colored world looks better than yours but I have no way top prove that or even test that I'm correct.

The image is too large to post here.