[Integration] Ignore checking out files line

spec/integration.rb

@@ -138,6 +138,9 @@ describe_cli 'pod' do
     # This was changed in a very recent git version
     s.replace_pattern /git checkout -b <new-branch-name>/, 'git checkout -b new_branch_name'
 
+    # git sometimes prints this, but not always ¯\_(ツ)_/¯
+    s.replace_pattern /^\s*Checking out files.*done\.[\n]?/, ''
+
     s.replace_path %r{
       `[^`]*? # The opening backtick on a plugin path
       ([[[:alnum:]]_+-]+?) # The plugin name