Paste path from clipboard in file dialog
In any "file open" dialogue, if you have a file path name in the clipboard, click ... Command + Shift + G.  This will open the search for folder dialogue. Paste File path name from the clipboard into the pathname field then simply paste the path name from your clipboard



Alternately, you can drag files directly from finder into your open dialogue…



As defined in the "GO" menu using Finder.app, using any of the shortcuts shown in this image, in any file open dialogue, will bring you to that folder.