Guix QA issue: "null"patch

[Andy Tai]

Hi, I run into a Guix QA issue. Simon encourages me to report Guix QA
issues so I send email here; not sure if there is other channel for
such issues.

In https://qa.guix.gnu.org/issue/61130

I just sent a v2 patch for that Guix issue and Guix QA now shows

"null" for the patch field and it is not clear if it can recognize the
v2 patch and build using that.

Thanks for whoever working on Guix QA to take a look of this problem.