I inspected the element and it is of id "your-repos-filter". I am however not sure how to click on it. I searched for clicking on ID's but didn't get any good results.
Use the “Select Safari Field” in Keyboard Maestro.
Besides that i understand deanishe’s side on the Alfred Forum… I don’t think you check yourself before you post. Do some searching and just sorry to say use your brain.
I’m seeing more and more posts (here and Alfred forum) where you ask for things that are actually already there and should be seen with open eyes. Can’t understand that you searched therefore.
I opened Keyboard Maestro and searched Actions for “Safari” and there it is.
This is not meant to be rude, but to open your eyes.