After completing your BSc in Physics, pursuing an MSc in IT is greatly feasible since most universities accept students from diverse science fields. With your background, it is clear that you are well-versed in mathematics, reasoning, and logic, all of which come in handy in IT. Nonetheless, there are certain universities that might ask for basic programming or computer science knowledge as criteria for admission, which you can achieve through various online platforms.
As a preparatory step, try and look for your preferred institutions and their eligibility requirements. Some may accept bridge courses in programming languages such as Python, Java, or C++. The scope of IT is wide, ranging from software development, data science, cybersecurity, to even networking. If you manage to cultivate the necessary skills and knowledge, the shift from physics to IT should be seamless. Should you have a strong passion for technology and simultaneously build the required skill set, an MSc in IT can get you into a durable and changing industry.