1 files changed, 0 insertions, 56 deletions
diff --git a/lib/gitlab/git/cross_repo_comparer.rb b/lib/gitlab/git/cross_repo_comparer.rb
deleted file mode 100644
index d42b2a3bd98..00000000000
--- a/lib/gitlab/git/cross_repo_comparer.rb
+++ /dev/null
@@ -1,56 +0,0 @@
-# frozen_string_literal: true
-
-module Gitlab
-  module Git
-    class CrossRepoComparer
-      attr_reader :source_repo, :target_repo
-
-      def initialize(source_repo, target_repo)
-        @source_repo = source_repo
-        @target_repo = target_repo
-      end
-
-      def compare(source_ref, target_ref, straight:)
-        ensuring_ref_in_source(target_ref) do |target_commit_id|
-          Gitlab::Git::Compare.new(
-            source_repo,
-            target_commit_id,
-            source_ref,
-            straight: straight
-          )
-        end
-      end
-
-      private
-
-      def ensuring_ref_in_source(ref, &blk)
-        return yield ref if source_repo == target_repo
-
-        # If the commit doesn't exist in the target, there's nothing we can do
-        commit_id = target_repo.commit(ref)&.sha
-        return unless commit_id
-
-        # The commit pointed to by ref may exist in the source even when they
-        # are different repositories. This is particularly true of close forks,
-        # but may also be the case if a temporary ref for this comparison has
-        # already been created in the past, and the result hasn't been GC'd yet.
-        return yield commit_id if source_repo.commit(commit_id)
-
-        # Worst case: the commit is not in the source repo so we need to fetch
-        # it. Use a temporary ref and clean up afterwards
-        with_commit_in_source_tmp(commit_id, &blk)
-      end
-
-      # Fetch the ref into source_repo from target_repo, using a temporary ref
-      # name that will be deleted once the method completes. This is a no-op if
-      # fetching the source branch fails
-      def with_commit_in_source_tmp(commit_id, &blk)
-        tmp_ref = "refs/#{::Repository::REF_TMP}/#{SecureRandom.hex}"
-
-        yield commit_id if source_repo.fetch_source_branch!(target_repo, commit_id, tmp_ref)
-      ensure
-        source_repo.delete_refs(tmp_ref) # best-effort
-      end
-    end
-  end
-end