Got my COPR; Next steps if transferring with the same company

Hi All, I just received my COPR and will be landing in a couple of months. In the meanwhile, my current employer is supportive of moving my current role to Canada. While the HR is working on it, I want to understand if any of you have any idea what may be needed to have the offer set up for Canada. I will not be doing a soft landing and hence won’t have a SIN. Will the company be able to process the work offer without my SIN? Thanks!!