Hello,

The command `guix shell -s riscv64-linux -Kc $(($(nproc)/2)) git` fails 
due to test failures while building Python 3.10.7. Notably, creating a 
shell with just Python (so, swapping "python" for "git" in the command) 
works fine.

Here is my channel information:
```
(channel
        (name 'guix)
        (url "<https://git.savannah.gnu.org/git/guix.git>")
        (branch "master")
        (commit
          "eb12f3fd8bee99920118ec802ffbac8f1ab676b9")
        (introduction
          (make-channel-introduction
            "9edb3f66fd807b096b48283debdcddccfea34bad"
            (openpgp-fingerprint
              "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA"))))
```

I have attached the build log as well.

Thanks,
Juli