diff --git a/app/controllers/concerns/creates_commit.rb b/app/controllers/concerns/creates_commit.rb
index dacb5679dd300fde4a034ba762960ee5a41610e7..5d11f286e9acc7e267deb21e5664c72db69e85ea 100644
--- a/app/controllers/concerns/creates_commit.rb
+++ b/app/controllers/concerns/creates_commit.rb
@@ -4,9 +4,10 @@ module CreatesCommit
   def create_commit(service, success_path:, failure_path:, failure_view: nil, success_notice: nil)
     set_commit_variables
 
+    source_branch = @ref if @ref && @repository.find_branch(@ref)
     commit_params = @commit_params.merge(
       source_project: @project,
-      source_branch: @ref,
+      source_branch: source_branch,
       target_branch: @target_branch
     )