Trek fx1 disc fork question

I was trying to convert my trek fx1 gen 3 into a ebike with a front hub motor but when I took off the wheel I noticed that it has a thru skew axle so I can’t put the new wheel on since it needs nuts to be tighten. I tried calling trek store to see if they have any forks but they said the fx1 need a specific one and none of them have a regular axle. I was wondering if anyone gotten a replacement for it. Need it to look like the picture. Thanks in advance.