For oil, I'd guess so. With COVID-19, there was a substantial reduction.

Though a wrinkle is that it's also disrupting LNG shipments. Coal power generation is a substitute good for natural gas power generation. One way that countries in Europe offset reduced natural gas availability when Russia cut supply was to increase (more-carbon-intensive) coal use, and I assume that the same thing will happen again now, so that might cause emissions from electrical power generation to rise, even if supply of a fossil fuel falls.

I expect that as we see what happens on the policy front and with consumer choice in response, that there will be people going off and modeling the impact.