diff --git a/app/models/site/repository.rb b/app/models/site/repository.rb
index 128a557a..119a1495 100644
--- a/app/models/site/repository.rb
+++ b/app/models/site/repository.rb
@@ -173,12 +173,18 @@ class Site
     def credentials
       return unless File.exist? private_key
 
-      @credentials ||=
-        begin
-          username = parse_url(origin.url)&.user || 'git'
+      Rugged::Credentials::SshKey.new username: username_for(origin), publickey: public_key, privatekey: private_key
+    end
 
-          Rugged::Credentials::SshKey.new username: username, publickey: public_key, privatekey: private_key
-        end
+    # Obtiene el nombre de usuario para el repositorio remoto, por
+    # defecto git
+    #
+    # @param :remote [Rugged::Remote]
+    # @return [String]
+    def username_for(remote)
+      username = parse_url(remote.url)&.user if remote.respond_to? :url
+
+      username || 'git'
     end
 
     # @param :url [String]