Update tests to expect correct URLs for private dist downloads

tests/Composer/Test/Repository/Vcs/GitHubDriverTest.php

@@ -103,7 +103,7 @@ class GitHubDriverTest extends \PHPUnit_Framework_TestCase
 
         $dist = $gitHubDriver->getDist($identifier);
         $this->assertEquals('zip', $dist['type']);
-        $this->assertEquals('https://github.com/composer/packagist/archive/v0.0.0.zip', $dist['url']);
+        $this->assertEquals('https://api.github.com/repos/composer/packagist/zipball/v0.0.0', $dist['url']);
         $this->assertEquals('v0.0.0', $dist['reference']);
 
         $source = $gitHubDriver->getSource($identifier);
@@ -113,7 +113,7 @@ class GitHubDriverTest extends \PHPUnit_Framework_TestCase
 
         $dist = $gitHubDriver->getDist($sha);
         $this->assertEquals('zip', $dist['type']);
-        $this->assertEquals('https://github.com/composer/packagist/archive/v0.0.0.zip', $dist['url']);
+        $this->assertEquals('https://api.github.com/repos/composer/packagist/zipball/v0.0.0', $dist['url']);
         $this->assertEquals('v0.0.0', $dist['reference']);
 
         $source = $gitHubDriver->getSource($sha);