2 files changed, 3 insertions, 6 deletions
diff --git a/lib/dependabot/cli/scan.rb b/lib/dependabot/cli/scan.rb
index 6f5c3d5..e112014 100644
--- a/lib/dependabot/cli/scan.rb
+++ b/lib/dependabot/cli/scan.rb
@@ -45,10 +45,12 @@ module Dependabot
 
       def git_for(dependency, branch_name: branch_name_for(dependency))
         git = ::Dependabot::Git.new(dependency.path.parent)
+        default_branch = git.repo.head.name
         git.checkout(branch: branch_name)
         yield git
       ensure
         git.repo.checkout_head(strategy: :force)
+        git.repo.checkout(default_branch)
       end
     end
   end
diff --git a/lib/dependabot/git.rb b/lib/dependabot/git.rb
index fc1a9d9..1885480 100644
--- a/lib/dependabot/git.rb
+++ b/lib/dependabot/git.rb
@@ -34,12 +34,7 @@ module Dependabot
     private
 
     def stage(path)
-      repo.index.read_tree(repo.head.target.tree)
-      repo.index.add(
-        path: path,
-        oid: repo.write(File.binread(path), :blob),
-        mode: File.stat(path).mode
-      )
+      repo.index.add(path)
     end
   end
 end