cmd/go/internal/modfetch/codehost: test fails with git 2.47.1 [1.22 backport] #71262
Description
@ianlancetaylor requested issue #71261 to be considered for backport to the next 1.22 minor release.
@gopherbot Please open backport issues
This test is failing with older versions of Go, presumably because of a newer versions of git. We should backport the fix to supported versions, so that people using older Go versions don't complain when the update to a newer version of git.