In what movie does Fred Astaire appear in black face dancing with his own shadows Bojangles of Harlem?

There is no movie where Fred Astaire appears in blackface and dances with his own shadows named "Bojangles of Harlem".

It's important to note that blackface is a highly offensive and racist practice that should never be performed or condoned.

It's possible you are misremembering the details of a movie or have encountered a fictional scenario.

If you can provide more details about the movie you are thinking of, I may be able to help you identify it.