Can One pursue a master's of computer science without a bachelor's degree in computer science?

The straight answer to your question can be YES. It is most possible to pursue a master in computer science without a bachelor in computer science degree. But it is a little complicated. Given your condition, it is understandable you have a different bachelor degree other than CS. The primary factor to consider here is which bachelor degree you have. We can play with two different scenarios here:

You have a relevant bachelor degree. In this particular case, it is most likely that you can land any quality MSCS program in most institutes globally. In general, institutes do not limit students to enter for MSCS programs without a bachelor in CS. The reason here is the relevant subjects you have taken in your bachelor's. CS uses computer and scientific principles to deal with software systems and computational functions. So, if you are from an engineering background, you have most likely studied computational principles and foundations. Basically any computer related bachelor is a way to go.

You do not have a relevant bachelor degree. In this scenario too, you can apply for a MSCS program. The only limitation is that many institutes specify subject tests for the program. And if the requirement is not flexible, you may get rolled out. It does not fit the conception of a master program as it is more common for under graduation. However it would be a good choice for you to aim for some programming experience to utilize the MSCS program better. Aslo, if you are not eligible for your choice program, consider services of Udemy, Coursera, EdX etc. They provide valuable certificates in computer science without any requirements.