Let's mimic git.git auto tag fetch behavior.

Related to https://github.com/libgit2/libgit2sharp/pull/927/files#r23450279

git fetch against a newly initialized repository with the following config

[core]
    repositoryformatversion = 0
    filemode = false
    bare = false
    logallrefupdates = true
    symlinks = false
    ignorecase = true
    hideDotFiles = dotGitOnly
[remote "origin"]
    url = https://github.com/libgit2/TestGitRepository
    fetch = +refs/heads/*:refs/remotes/origin/*

outputs

$ git fetch
remote: Counting objects: 68, done.
remote: Total 68 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (68/68), done.
From https://github.com/libgit2/TestGitRepository
 * [new branch]      first-merge -> origin/first-merge
 * [new branch]      master     -> origin/master
 * [new branch]      no-parent  -> origin/no-parent
remote: Counting objects: 1, done.
remote: Total 1 (delta 0), reused 1 (delta 0)
Unpacking objects: 100% (1/1), done.
 * [new tag]         annotated_tag -> annotated_tag
 * [new tag]         blob       -> blob
 * [new tag]         commit_tree -> commit_tree

git is noticing that the server did not automatically send the tags and is performing a second fetch. This second fetch is completely different from the first one

L’issue ne nomme aucun fichier source ni aucun test. Commencez par localiser l’implémentation de fetch et ses tests de fetch existants, puis comparez le fetch initial avec le fetch de tags ultérieur de Git lorsque le serveur n’envoie pas automatiquement les tags. C’est terminé lorsque le comportement démontré avec deux fetch correspond et que les tags nouvellement récupérés sont signalés.