How exactly do you avoid ekko's Q?

you ban him

Walk perpendicular to the way the player throws the Timewinder.

http://d.gojane.com/104266-d-tan-0.jpg http://www.lovethisgif.com/uploaded_images/78377-This-Is-A-Man-briskly-Walking..gif

That's why the initial hit ratio is so low because e+Q is almost guranteed. If you have 0 cc and 0 mobility than yes he can position himself to get the 2nd hit of Q assuming you dont dodge it. So yeah dodge, CC him, use a mobility skill.

hes in melee range? attack him? or use cc? lol

go behind Ekko after he uses his Phase Dive, at most he will only hit the first shot of Timewinder which is the weaker one

I'm more concerned about its return hitbox than the EQ combo.