push vs. bundle vs. tar zcvf -- to backup entire local .git

Question

I can backup my local .git by pushing it to a repository in two steps:

git push --all ~/gitrepo
git push --tags ~/gitrepo

I can back it up using git bundle.

I can back it up by simply copying the entire directory or archiving it (compressed!):

tar -zcvf gitrepo.tgz .git

And there are probably additional ways to backup an entire local .git.

The question now is whether they are really equivalent? (for example, the logs subdirectory isn't pushed)

What are the advantages of the git push method vs. git bundle?

Can tar -zcvf be considered "the perfect git backup"?

Answer 1

I use Git bundle

git bundle create /tmp/backup.git --all --tags --remotes

You can receive it as if it were a repo:

cd myworktree
git pull /tmp/backup.git

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But also see

• How to update a git clone --mirror?
• "fetch --all" in a git bare repository doesn't synchronize local branches to the remote ones
• Git doesn't clone all branches on subsequent clones?

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Completeness, notes

For complete backup (thing of git-rerere cache, stashes, hooks, configuration files) I suggest using rsync

rsync -hxPavilyzH --stats --delete .git/ backup@remote:/repo/mirror.git/

Alternatively:

• Is it possible to push a git stash to a remote repository?
• copy the rerere cache directory