Hope these restrictions are temporary, also AFAIK after being actually married, your spouse would be eligible for K-1 US visa. Wish you luck in any case.
I hope these are temporary, but I imagine they will be temporary until at least January of next year. If the unthinkable happens in November, the prognosis is not good. Even the K-1 visa has large delays, and they aren't even processing any visas at U.S. Consulates in China right now.
If a U.S. citizen marries abroad, they would file an I-130 petition for their spouse to immigrate in the IR/CR category; they would then be able to file for a K-3 non-immigrant spouse visa so their spouse could accompany them to the U.S. while the I-130 petition was processed.
Despite the fact that you legally can (according to a sibling comment), it's practically unwise.
Sec. 3. Scope of Suspension and Limitation on Entry. (a) The suspension and limitation on entry pursuant to section 2 of this proclamation shall apply only to any alien who:
(i) is outside the United States on the effective date of this proclamation;
(ii) does not have a nonimmigrant visa that is valid on the effective date of this proclamation; and
(iii) does not have an official travel document other than a visa (such as a transportation letter, an appropriate boarding foil, or an advance parole document) that is valid on the effective date of this proclamation or issued on any date thereafter that permits him or her to travel to the United States and seek entry or admission.
That said whether DOS interprets it that way is another story.