Actually of the 20 ordered 12 went to Milwaukee Road, the so called "Little Joe" for Joseph Stalin. Th rest IIRC went possibly to Brazil or some such. The Soviets then collaborated with the French (Alstom in particular) to get electric locomotive technology.
Here is a nice article on early post-war electric traction development in the USSR
https://rollingstockworld.com/locom...he-national-electric-locomotives-development/
Here is the Wikipedia article on Little Joe:
https://en.wikipedia.org/wiki/Little_Joe_(electric_locomotive)
An informative article about the development of electric traction in Russia from 1929 to early post WWII years
https://janfordsworld.blogspot.com/2019/11/loco-profile-dc-electric-locomotives-in.html
Yet more info on these electrified locomotives. This photo is of, one of many sign boards along the Hiawatha Trail which starts in Idaho and ends in Montana. It's a fabulous trail which I've ridden 3 times so far. The electrical power for these trains was provided by a hydroelectric dam in Thompson Falls, MT which was built for this purpose. As I recall, the line ran from Tacoma, to Lewistown, MT. As of several years ago (the last time I drove that part of I-90), you could still see some of the small brick substations a short distance from the highway.