On February 27th, per the article: "The fire at the hangar was detected at 11:13 a.m. on Sunday, according to the NASA data, which is obtained from a number of NOAA and NASA satellites."
Fighting continued (it's in a hotly contested airport just north of Kyiv), and then yesterday the company released another update that said:
> Currently, until the AN-225 has been inspected by experts, we cannot report on the technical condition of the aircraft.
https://twitter.com/AntonovCompany/status/149796783633704140...
Based on that, I wouldn't call it completely destroyed, but it will certainly need repairing.