The head of the city’s sergeants union accused Police Commissioner Bill Bratton of hypocrisy Sunday and called for his resignation.

“What I am seeing on a regular basis now in the NYPD lately is, it’s a do as I say, not as I do attitude, and this is coming directly from Commissioner Bratton,” Sergeants Benevolent Association President Ed Mullins said on John Catsimatidis’s radio show on AM 970.

“We have a hypocrisy that’s coming right from the top, and it has to stop,” he said.

Mullins said the top cop was being called “Bratton 2.0” by the rank-and-file because he’s two-faced.

The union chief complained that everyone in the department was aware of ticket-fixing before that scandal broke and that it was part of the culture — but now that it has come to light publicly, Bratton is blasting officers over it.

He added that a current investigation into whether cops took gifts for favors comes as Bratton let the privately funded Police Foundation pay for his membership to the Harvard Club.

“I personally think Bratton has stayed too long, and it’s time to go,” Mullins said. “We need to set an example of leadership going forward, and I just don’t see that happening.”