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There is precedent, but do not expect the police to remain loyal to the mayor:

https://en.wikipedia.org/wiki/New_York_City_Police_riot

Massive police corruption, under Mayor Fernando Wood, prompted the New York state legislature to relieve him of control over the city’s police. A bill passed in 1857 replaced the Municipal Police with a Metropolitan Police Force was to be controlled by five commissioners appointed by the Governor of New York.

The new commission ordered Mayor Wood to disband the Municipal police and turn over its property to the Metropolitans. Wood refused, however, even after the State Supreme Court upheld, in May 1857, the law establishing the commission. Wood called upon the Municipals to support him; when this was put to a vote, 15 police captains and 800 patrolmen under Police Superintendent George Washington Matsell chose to support the mayor.

In June 1857, after the sudden death of Street Commissioner Joseph S. Taylor, Mayor Wood and Governor John King argued over a successor, and Daniel D. Conover was eventually selected. Arriving at New York City Hall to assume the office on June 16, Conover was informed that Mayor Wood had instead appointed Charles Devlin to the position. Wood had Conover forcibly removed from the building by Municipal police officers, and Conover obtained two warrants for the arrest of the mayor. One was for inciting a riot and the other was for “violence against Conover’s person”. (It was widely speculated afterward that Wood had received $50,000 from Devlin ($1.4m in 2014) to secure the position.[1][2])

Captain George Walling of the Metropolitans was assigned to carry out one of the warrants. He arrived at City Hall by himself and was allowed to speak with Mayor Wood in his private office. Learning the purpose of his visit, Wood refused to accompany Walling, who then attempted to take him out of the building by force. Over 300 Municipal officers were stationed at City Hall, and Walling was stopped and thrown out into the street. He attempted several times to re-enter, arguing with Captain Abraham Ackerman, until the arrival of Captains Jacob Sebring and Coroner Perry, leading fifty Metropolitans, to serve the second warrant.[1][2]

The Municipals charged out of the building, and for over a half-hour, the rival forces fought on the steps and in the corridors of City Hall. The Metropolitans were eventually forced from the building in a disorganized retreat. During the riot, 53 men were injured, including one officer from the Seventeenth Precinct, Patrolman Crofut, whose injuries resulted in his becoming an invalid. The wounded Metropolitans were brought to the office of Recorder James M. Smith and treated, while Mayor Wood and his supporters celebrated their victory in his private office.[1]

During the fight, Conover and his attorney visited Sheriff Jacob Westervelt to request that he serve the warrants. Westervelt was advised by his representatives that it was his legal responsibility to do so, and he left with two men for City Hall. Upon his arrival, Wood again refused to leave his office. Soon after, members of the Metropolitan Police Board met with Major General Charles W. Sandford, who was about to leave with the Seventh Regiment for Boston. Sandford agreed to assist, and he led the regiment to City Hall. His men surrounded the building, and he entered City Hall to confront Mayor Wood. Realizing his situation, Wood agreed to submit and was placed under arrest.