When I want to throw away all changes, I intuitively moved my cursor to the header 'Unstaged' and pressed 'X' but was disappointed that it did not work. Instead, we currently need to enter visual mode, ] to the end of the paragraph and then 'X' - but it will take a long time (for example 20 seconds for about 300 files in my case) because it is saving each file.

It would be nice to have a quick way to do this.