error in ./build-setup.sh riscv-tools process

[yjf111]

in chipyard project Repository set up , i met error in the process of ./build-setup.sh riscv-tools
these are the error message:

...
make: Leaving directory '/home/yjf/miniconda3/chipyard/toolchains/riscv-tools/riscv-isa-sim/build'
==>  Installing Proxy Kernel
=>  Starting riscv-pk build
==>  Initializing riscv-pk submodule
+ git submodule update --init --recursive /home/yjf/miniconda3/chipyard/toolchains/riscv-tools/riscv-pk
error: Server does not allow request for unadvertised object e8e6b3aaee44d43b48164fbd377864c3a682dbd3
fatal: Fetched in submodule path 'toolchains/riscv-tools/riscv-pk', but it did not contain e8e6b3aaee44d43b48164fbd377864c3a682dbd3. Direct fetching of that commit failed.

i can't find any solutions for this by search engine. How do i solve this problem? THANKS for suggestions :)

[aswaterman]

This looks like a build system specific to chipyard. You should ask there instead.

[yjf111]

OK, thanks!