diff --git a/app/models/repository.rb b/app/models/repository.rb
index beafe9060bf4e5b7ab653d7d66594edf520c49c1..b2b5d52884002409a47bd0dae0cdec8d5ced63bb 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -998,7 +998,7 @@ class Repository
       base_branch,
       source_branch: revert_tree_id) do
       committer = user_to_committer(user)
-      source_sha = Rugged::Commit.create(rugged,
+      Rugged::Commit.create(rugged,
         message: commit.revert_message,
         author: committer,
         committer: committer,
@@ -1018,7 +1018,7 @@ class Repository
       base_branch,
       source_branch: cherry_pick_tree_id) do
       committer = user_to_committer(user)
-      source_sha = Rugged::Commit.create(rugged,
+      Rugged::Commit.create(rugged,
         message: commit.message,
         author: {
           email: commit.author_email,