I've always found the concept of brewing a "clone" amusing. I don't know who decided to apply that word to brewing, but it is far from appropriate.
Asking for a recipe that brews a beer similar to "X" is more accurate.
When I was less experienced I used recipes as a starting point and went from there, both in brewing and cooking. Now I taste beer or food and choose the ingredients that I think are going to produce the flavor results that I want. It's very seldom I use recipes anymore. Ingredients vary in flavor quite a lot over time. Most of the time now I choose ingredients based on what I'm trying to create, like painting from a palate of flavors, instead of colors. I learned this from cooking, and apply it to brewing too. My wife and Chef M taught me how.
Why would I want to brew a clone when I can buy the original? When I brew, I want to brew something original - something to style, but with my signature on it.
For instance, probably the best beer I brew, and a style I really enjoy drinking is Münchner Helles. However, I really like the flavor of Hallertauer Hersbrucker hops. My helles is over-hopped for flavor and aroma for someone used to the Bavarian style, but I don't brew for Bavarians, I brew for me.