Pass `@ref` along so we know which pipeline to show

Closes #23615

2 files changed, 20 insertions, 3 deletions

diff --git a/app/controllers/projects/commits_controller.rb b/app/controllers/projects/commits_controller.rb
index c2e7bf1ffec..aba87b6144b 100644
--- a/app/controllers/projects/commits_controller.rb
+++ b/app/controllers/projects/commits_controller.rb
@@ -26,8 +26,15 @@ class Projects::CommitsController < Projects::ApplicationController
 
     respond_to do |format|
       format.html
-      format.json { pager_json("projects/commits/_commits", @commits.size) }
       format.atom { render layout: false }
+
+      format.json do
+        pager_json(
+          'projects/commits/_commits',
+          @commits.size,
+          project: @project,
+          ref: @ref)
+      end
     end
   end
 end
diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index 2ee53f7ceda..eff79b63cee 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -352,13 +352,23 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   def branch_from
     # This is always source
     @source_project = @merge_request.nil? ? @project : @merge_request.source_project
-    @commit = @repository.commit(params[:ref]) if params[:ref].present?
+
+    if params[:ref].present?
+      @ref = params[:ref]
+      @commit = @repository.commit(@ref)
+    end
+
     render layout: false
   end
 
   def branch_to
     @target_project = selected_target_project
-    @commit = @target_project.commit(params[:ref]) if params[:ref].present?
+
+    if params[:ref].present?
+      @ref = params[:ref]
+      @commit = @target_project.commit(@ref)
+    end
+
     render layout: false
   end