版权声明：本文为博主原创文章，未经博主允许不得转载。谢谢配合!!! https://blog.csdn.net/masuwen/article/details/80290275
can you try to run
svn checkout
once manually to your URL
https://yoururl/trunk C:\ant-1.8.1\Test_Checkout
using command line and accept certificate.