They didn't, it moved under its own power! However, trains can't steer, so according to a user in the forum this article is based on, they used a crane to lift the ends into place to aim it.
Ok, wow.
The article doesn't say, but I assume they drove it under its own power.
I live near there and remember going to see the train in the town’s center when it happened. I remember seeing the wheel’s tracks in the asphalt, as they drove the loco directly on it, and was impressed at how shallow they were. I would have thought the train would tear the asphalt apart, but it was not the case, at least not when going in straight line.
The linked video appears to show it driving under its own power