"Stretching" a picture

[Pito Salas]

I have a photo that's about square. I would like to stretch it way out so its about 8 x 1 proportions. Given the original, I would like to more or less take the right most 1/10th and replicate it over and over until the photo is eight times as wide as it is tall. I thought content aware fill would do it, but it seems to take the whole original and kind of replicate it 7 times. I think there must be an easy way to do this but cant figure it out... Help?

[toltec]

Very hard to say without seeing an exact example but one method is to select one edge and draw it out

Make the canvas wider, based from one edge 

Make a pixel selection of the edge of the image

and use the Move Tool to stretch the selection out

You will probably have to clean it up quite a bit.

The other alternative is to make the canvas bigger, then just copy and paste loads of times.

[Pito Salas]

Wow, thanks! And what a nicely rendered answer

 

[Ron P.]

I used the Clone tool for the background of the extended canvas, applied a lens blur.