CI: clone repositories up front
Created by: chrismwendt
Prevents errors such as https://buildkite.com/sourcegraph/sourcegraph/builds/29407#c23deaea-f724-4546-9f6a-1137f4257c6e where the repository was not cloned when the search test ran.
Created by: chrismwendt
Prevents errors such as https://buildkite.com/sourcegraph/sourcegraph/builds/29407#c23deaea-f724-4546-9f6a-1137f4257c6e where the repository was not cloned when the search test ran.