bug#74583: ‘guix git authenticate’ pre-push hook unsuitable in some cases

[Ludovic Courtès]

And when pushing tags:

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$ git … push origin --tags
guix git: .[1;31merror: .[0mGit error: the requested type does not match the 
type in the ODB
error: failed to push some refs to 'ssh://git.sv.gnu.org/srv/git/shepherd.git'
--8<---------------cut here---------------end--------------->8---