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Mot
Mot

Reputation: 29550

Git: distinguish between local and remote tags

If there are tags in the remote repository, I'm usually getting them automatically when pulling. When I delete the created local tag (git tag -d <tag-name>) and pull, the deleted tag will be recreated. I can delete remote branches/tags (git push <remote-branch/tag-name>:<branch/tag-name>), but how can I detect that the local tag was created by fetching a remote tag?

Upvotes: 30

Views: 14816

Answers (3)

Nathan
Nathan

Reputation: 10784

As long as you currently have access to the remote repository, you can compare the results of

git ls-remote --tags

with

git show-ref --tags -d

Note:

  • The remote must currently be available
  • If the tag was deleted from the remote, you wouldn't be able to tell that the "local" tag was originally pulled from the remote
  • This will allow you to see when the remote and local have the same tag name but either reference different commits or were created/updated independently (for annotated tags, the tag hashes would be different even if the commit hash was the same)

Upvotes: 3

Mark Longair
Mark Longair

Reputation: 467241

If you're annoyed about these tags being recreated when you run git pull, you turn off the fetching of tags by default with the remote.<remote-name>.tagopt config setting. e.g. if the remote is origin, then you can do:

git config remote.origin.tagopt --no-tags

Update: to address your comment, the reason that I suggest this is that there's not an obvious way to tell the difference between a tag that was created locally and one that was fetched from a remote. There's also no reflog for tags. So, my suggestion is to suppress automatic fetching of tags - you can then fetch them yourself into a different namespace. For example, you could do:

git fetch origin +refs/tags/*:refs/tags/origin/*

... and perhaps create an alias for that. Then when you want to fetch tags, they'll be named, for example, refs/tags/origin/tag1 instead of refs/tags/tag1.

If you want this to happen automatically, you could change your .git/config to list multiple refspecs for fetching, e.g.:

 [remote "origin"]
      url = whoever@whereever:whatever.git
      fetch = +refs/heads/*:refs/remotes/origin/*
      fetch = +refs/tags/*:refs/tags/origin/*

... which is suggested in Pro Git.

Upvotes: 32

VonC
VonC

Reputation: 1324557

a tag isn't "local" or "remote": it is associated to a commit, which can part of multiple branches, including ones in the remotes namespace.

Get tag SHA1 of the commit referenced by a tag

git show -s 'TAG_NAME^{commit}' --format='%H'

, and do a :

git branch -a --contains SHA1

If you see

 remotes/aRemoteRepoName/aBranch

you know that tag references a commit you have fetched from a remote repo.

As Chris mentions:

git branch -a --contains TAGNAME

will dereference the tag and gives the answer in one go.

Upvotes: 10

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