Update app.py

app.py

@@ -10,7 +10,7 @@ else:
   print("Using CPU")
 
 # Clone the repository
-subprocess.run(["git", "clone", "https://github.com/dark2star/facefusion", "--branch", "2.5.1.1", "--single-branch"], check=True)
+subprocess.run(["git", "clone", "https://github.com/dark2star/facefusion", "--branch", "pre", "--single-branch"], check=True)
 # chande directory to face fusion to run ui
 os.chdir("facefusion")