Can't import the `otel` package

[alexandear]

I'm trying to import the otel package from this repository into a Go program, but I'm unable to do so. I tried the following commands:

❯ go get github.com/google/go-github/v85/otel
go: module github.com/google/go-github/v85@upgrade found (v85.0.0), but does not contain package 
github.com/google/go-github/v85/otel

❯ go get github.com/google/go-github/otel
go: downloading github.com/google/go-github/otel v0.0.0-20260430203823-b7b1f86d59fa
go: github.com/google/go-github/otel@upgrade (v0.0.0-20260430203823-b7b1f86d59fa) requires github.com/google/go-github/otel@v0.0.0-20260430203823-b7b1f86d59fa: parsing go.mod:
        module declares its path as: github.com/google/go-github/v85/otel
                but was required as: github.com/google/go-github/otel

It looks like the issue is caused by missing otel/vX.Y.Z Git tags in the repository. According to the "Mapping versions to commits" documentation:

If a module is defined in a subdirectory within the repository, that is, the module subdirectory portion of the module path is not empty, then each tag name must be prefixed with the module subdirectory, followed by a slash. For example, the module golang.org/x/tools/gopls is defined in the gopls subdirectory of the repository with root path golang.org/x/tools. The version v0.4.0 of that module must have the tag named gopls/v0.4.0 in that repository.

So for github.com/google/go-github/v85/otel, Go expects tags like otel/vX.Y.Z. The otel/ prefix is mandatory.

Since the otel package can't currently be imported, I'm wondering if anyone is actually using it. If not, perhaps it could be removed? It has been added in #3938.

[gmlewis]

It's currently used in the "example" directory and found using a "replace" in the go.mod file.
I first tried tagging the v85.0.0 release with otel/v85.0.0 and it still was unable to "go get" it.
When I ran this by an agent, it said I need to use "go work" workspaces to solve the problem.
So I created #4186 to see if this solves the problem, but we probably won't be able to find out until v86.0.0 is released.

[alexandear]

I first tried tagging the v85.0.0 release with otel/v85.0.0 and it still was unable to "go get" it.

Thanks. That might help.

Also, I think the problem is the otel module name. Created a fix #4187