pyenv can't update a local ref?

Question

Pyenv 2.3.3 won't install Python 3.5-dev

$ pyenv install 3.5-dev
Cloning https://github.com/python/cpython...

BUILD FAILED (Ubuntu 22.04 using python-build 2.3.3)

Results logged to /tmp/python-build.20220919062707.7231.log

Last 10 log lines:
/tmp/python-build.20220919062707.7231 ~
~/.pyenv/cache /tmp/python-build.20220919062707.7231 ~
error: cannot update ref 'refs/heads/3.5': trying to write non-commit object 99208800fdf8c209fcaaa04c9d1bae81f39d36f7 to branch 'refs/heads/3.5'
Da https://github.com/python/cpython
 ! [nuovo tag]             3.5        -> 3.5  (impossibile aggiornare il riferimento locale)

The last line is the Italian for

"updating local reference impossible"

I already have some versions installed

$ pyenv versions
  system
  3.7.13
* 3.8-dev (set by /home/me/.python-version)
  3.8-dev/envs/pyenv_tender
  3.10-dev
  pyenv_tender

Could this be because the CPython repository has no branch for 3.5 ?