Yea… it’s nothing but a propaganda statement.
Setting up such facilities could take a year. And that’s assuming they could obtain materials and parts needed to repair anything, which they likely don’t.
On top of that the choice for “repair” instead of “produce” is another one to make you laugh.
I’m slightly hopeful the war’s over by spring. Ukraine is pushing hard (hope they can keep it up) and Russian troops are in for an ill supplied winter.