Suppress log by filtering remote refs

CHANGELOG.md

@@ -7,6 +7,7 @@ Reverse Chronological Order:
 https://github.com/capistrano/capistrano/compare/v3.7.0.beta1...HEAD
 
 * Your contribution here!
+* Suppress log messages of `git ls-remote` by filtering remote refs (@aeroastro)
 
 ## `3.7.0.beta1` (2016-11-02)
 

features/deploy.feature

@@ -7,7 +7,6 @@ Feature: Deploy
   Scenario: Creating the repo
     When I run cap "git:check"
     Then the task is successful
-    And references in the remote repo are listed
     And git wrapper permissions are 0700
 
   Scenario: Creating the directory structure

lib/capistrano/scm/git.rb

@@ -32,7 +32,7 @@ class Capistrano::SCM::Git < Capistrano::SCM::Plugin
   end
 
   def check_repo_is_reachable
-    git :'ls-remote --heads', repo_url
+    git :'ls-remote', repo_url, "HEAD"
   end
 
   def clone_repo

spec/lib/capistrano/scm/git_spec.rb

@@ -46,7 +46,7 @@ module Capistrano
     describe "#check_repo_is_reachable" do
       it "should test the repo url" do
         env.set(:repo_url, "url")
-        backend.expects(:execute).with(:git, :'ls-remote --heads', "url").returns(true)
+        backend.expects(:execute).with(:git, :'ls-remote', "url", "HEAD").returns(true)
 
         subject.check_repo_is_reachable
       end