bin/nixenvironment in nixenvironment-0.0.66 vs bin/nixenvironment in nixenvironment-0.0.67

@@ -214,10 +214,16 @@
     end
   end
 
   puts
   dest_url                 = ask('Destination repository url: ')
+
+  Git.ls_remote(dest_url)
+  raise "Repository not found: '#{dest_url}'" unless Git.last_cmd_success?
+
   local_directory_to_clone = ask('Directory to clone into: ')
+  raise 'Cloning into an existing directory is not allowed!' if Dir.exist?(local_directory_to_clone)
+
   repo_name                = File.basename(dest_url,             GIT_EXT)
   template_project_name    = File.basename(template_project_url, GIT_EXT)
 
   begin
     FileUtils.rm_rf(ADJUSTER_WORKING_COPY_PATH)
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