EDIT: I still hope Putin won't call out general mobilization of forces, for your own sake. No Bitcoiner (noone, really) should be foced to serve to kill.
Does general mobilization basically just mean a draft?
Yes, after looking up "draft" in a dictionary. Every russian man capable of serving the army will be drafted. I'm not a native speaker, btw.
Draft (conscription) is usually an annual event to sign up 18-year-olds for training (6-12 months). Few countries still have that, including Russia. Most countries don't have it, but e.g. in the US men are required to register in case draft if re-instituted in the event of a war.
Mobilization is assembling a military force for a specific purpose (e.g. a war) and it involves everyone of military age (18-60 or so), so it's much more than a draft.