The court or sentencing judge may at any time during the period of probation or conditional discharge, after hearing and for good cause shown, terminate a sentence of probation or conditional discharge before the completion thereof, except a sentence of probation imposed for conviction of a violation of subdivision (2) of section 53-21 of the general statutes in effect prior to October 1, 2000, section 53a-70b of the general statutes, revision of 1958, revised to January 1, 2019, or subdivision (2) of subsection (a) of section 53-21 or section 53a-70, 53a-70a, 53a-71, 53a-72a or 53a-72b.