Add test for branch fetches fixed by PR 2160

To verify the behavior is not broken with future fetch or zip handling
updates.

Bug: 476141347

Author: cjreynol

e2etests/cvd/launch_cvd_tests/main_test.go

@@ -61,6 +61,11 @@ func TestLaunchCvd(t *testing.T) {
 			branch: "git_android16-car-release",
 			target: "aosp_cf_x86_64_auto-userdebug",
 		},
+		{
+			name:   "Aosp11GsiPhone",
+			branch: "aosp-android11-gsi",
+			target: "aosp_cf_x86_64_only_phone-userdebug",
+		},
 	}
 	c := e2etests.TestContext{}
 	for _, tc := range testcases {