Submodule fetch failure

[piso77]

$ git fetch -a --recurse-submodules
Fetching submodule src/advanced/VexRiscv
Fetching submodule src/advanced/VexRiscv/src/test/resources/VexRiscvRegressionData
Fetching submodule src/advanced/iceZ0mb1e
Fetching submodule src/advanced/litex-buildenv
Fetching submodule src/advanced/litex-buildenv/third_party/edid-decode
Fetching submodule src/advanced/litex-buildenv/third_party/flash_proxies
Fetching submodule src/advanced/litex-buildenv/third_party/litedram
Fetching submodule src/advanced/litex-buildenv/third_party/liteeth
Fetching submodule src/advanced/litex-buildenv/third_party/litepcie
Fetching submodule src/advanced/litex-buildenv/third_party/litesata
Fetching submodule src/advanced/litex-buildenv/third_party/litescope
Fetching submodule src/advanced/litex-buildenv/third_party/liteusb
Fetching submodule src/advanced/litex-buildenv/third_party/litevideo
Fetching submodule src/advanced/litex-buildenv/third_party/litex
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/build/sim/core/modules/ethernet/tapcfg
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/soc/cores/cpu/lm32/verilog/submodule
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/soc/cores/cpu/minerva/verilog
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/soc/cores/cpu/mor1kx/verilog
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/soc/cores/cpu/picorv32/verilog
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/soc/cores/cpu/rocket/verilog
Fetching submodule src/advanced/litex-buildenv/third_party/litex/litex/soc/cores/cpu/vexriscv/verilog
Could not access submodule 'litex/soc/software/compiler_rt'
Fetching submodule src/advanced/litex-buildenv/third_party/litex-renode
Fetching submodule src/advanced/litex-buildenv/third_party/migen
Fetching submodule src/advanced/litex-buildenv/third_party/nmigen
Errors during submodule fetch:
        third_party/litex
Fetching submodule src/advanced/up5k-demos
Fetching submodule src/advanced/up5k_6502
Fetching submodule src/advanced/up5k_6502/osdvu
Fetching submodule src/advanced/up5k_6502/verilog-6502
Fetching submodule src/advanced/usb
Errors during submodule fetch:
        src/advanced/litex-buildenv

[mithro]

@piso77 -- Can you log an issue with https://github.com/timvideos/litex-buildenv about the litex/soc/software/compiler_rt repository being broken?