`git fetch --tags --unshallow`, run as part of the CI for `git
describe` to do the right thing, ran into the error:
```
! [rejected] mosh-1.4.0-rc0 -> mosh-1.4.0-rc0 (would clobber existing tag)
```
This is because mosh uses annotated tags, whereas the initial fetch
command run by actions/checkout@v2 ends up creating an *unannotated*
tag of the same name.
This means that any time the release CI runs, it would fail.
The resolution is straightforward: --force so that the line becomes
```
t [tag update] mosh-1.4.0-rc0 -> mosh-1.4.0-rc0
```
and the annotation is brought in.
Alex Chernyakhovsky
850c1f0955