Hello!
In the case of HCIP R&S Fast Track, you can refer to the HCIP R&S.
The examination syllabuses are nearly the same for both of them.
Please follow the link below to get the desired information:
https://forum.huawei.com/enterprise/en/huawei-hcip-certifications-learning-materials-bookshelf-january-21-2019/thread/480581-911.
Thanks!