online::clone: test a googlesource URL

Google Git (googlesource.com) behaves differently than git proper.
Test that we can communicate with it.

tests/online/clone.c

@@ -11,6 +11,7 @@
 #define BB_REPO_URL "https://libgit3@bitbucket.org/libgit2/testgitrepository.git"
 #define BB_REPO_URL_WITH_PASS "https://libgit3:libgit3@bitbucket.org/libgit2/testgitrepository.git"
 #define BB_REPO_URL_WITH_WRONG_PASS "https://libgit3:wrong@bitbucket.org/libgit2/testgitrepository.git"
+#define GOOGLESOURCE_REPO_URL "https://chromium.googlesource.com/external/github.com/sergi/go-diff"
 
 #define SSH_REPO_URL "ssh://github.com/libgit2/TestGitRepository"
 
@@ -463,6 +464,13 @@ void test_online_clone__bitbucket_falls_back_to_specified_creds(void)
 	cl_fixture_cleanup("./foo");
 }
 
+void test_online_clone__googlesource(void)
+{
+	cl_git_pass(git_clone(&g_repo, GOOGLESOURCE_REPO_URL, "./foo", &g_options));
+	git_repository_free(g_repo); g_repo = NULL;
+	cl_fixture_cleanup("./foo");
+}
+
 static int cancel_at_half(const git_indexer_progress *stats, void *payload)
 {
 	GIT_UNUSED(payload);