What would be the first step of the mechanism in the hydrolysis of SiCl4?

I know that SiO2 is formed, but Im confused as to how this would occur.

Probably hydrolysis to Si(OH)4, then dehydrate to SiO2 and H2O.

SiCl4 + 4HOH ==> Si(OH)4 + 4HCl
Si(OH)4 ==> SiO2 + 2H2O