I know that the camera may be making the damage look worse than it is but...daayyaaam, that's fugly. The best repair method would be having them welded & centerless ground, then polished. I've had success brazing, metalfinishing & polishing when the damage is tightly localized, like this. Brazing rod, being softer than steel, can be dressed-down using a fine abrasive sanding belt, leaving a finish that only needs polishing. The surrounding, healthy, metal serves as a "guide". This method isn't perfect but, a.) there's enough virgin metal surface remaining to keep the fork leg located positively and b.) the rubber seals can deal with a few thousandths eccentricity and still do their job.
