How to custom order a dataframe based on a column values

Question

I have data frame

 df = pd.DataFrame({'Branch': ['ECE', 'ICE', 'IT', 'CSE', 'CHE','ECE', 'IT', 'CSE'],
                    'CGPA': [8.15, 9.03, 7.85, 8.55, 9.45,7.89, 8.89, 9.90],
                    'Name': ['Sanjay', 'Aman', 'Ankit', 'Ravi', 'Komal', 'sunny', 'venky', 'Monal'],
                    'Roll': [111, 112, 113, 114, 115, 116, 117, 118]})

I want the data frame based column Branch and the branch column order should be ECE<CSE<IT<CHE<ICE

output should be:

  Branch        CGPA     NAME      Roll  
  ECE           8.85     Sanjay    111
  ECE           8.89     Sunny     116
  CSE           8.55     Ravi      114
  CSE           9.90     Monal     118
  IT            7.85     Ankit     113
  IT            8.89     Venky     117
  CHE           9.45     Komal     115
  ICE           9.03     Aman      112