Fix the ee-files-location-check job for forks

Signed-off-by: Rémy Coutable <remy@rymai.me>

scripts/ee-files-location-check

@@ -18,14 +18,11 @@ WHITELIST = [
 new_files_in_this_branch_not_at_the_ee_top_level =
   `git diff canonical-ee/master...HEAD --name-status --diff-filter=A -- ./ ':!ee' | cut -f2`.lines.map(&:strip)
 
+ce_repo_url = ENV['CI_REPOSITORY_URL'].sub('gitlab-ee', 'gitlab-ce')
 current_branch = ENV.fetch('CI_COMMIT_REF_NAME', `git rev-parse --abbrev-ref HEAD`).strip
 ce_branch_name = current_branch.sub(/(\Aee\-|\-ee\z)/, '')
 
-`git fetch canonical-ce #{ce_branch_name} --quiet`
-
-unless $?.success?
-  `git fetch canonical-ce 'master' --quiet`
-end
+`git fetch #{ce_repo_url} #{ce_branch_name} --quiet` || `git fetch canonical-ce 'master' --quiet`
 
 ee_specific_files_in_ce_master_not_at_the_ee_top_level =
   `git diff FETCH_HEAD..HEAD --name-status --diff-filter=A -- ./ ':!ee' | cut -f2`.lines.map(&:strip)