Implement Repository#ambiguous_ref?

This implements Repository#ambiguous_ref? and checks if a ref is
ambiguous before trying to resolve the ref in Project#protected_for?

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/gitlab/ci/pipeline/chain/validate/repository.rb b/lib/gitlab/ci/pipeline/chain/validate/repository.rb
index 6e95c0717c6..09b3187569c 100644
--- a/lib/gitlab/ci/pipeline/chain/validate/repository.rb
+++ b/lib/gitlab/ci/pipeline/chain/validate/repository.rb
@@ -17,7 +17,7 @@ module Gitlab
                 return error('Commit not found')
               end
 
-              unless @command.project.repository.resolve_ref(@command.origin_ref)
+              if @command.project.repository.ambiguous_ref?(@command.origin_ref)
                 return error('Ref is ambiguous')
               end
             end