Problem

You want to tag your branches in a remote repository and share the tags with other users, but usually the git pull and git push do not update the tags.

Solution

According to the git documentation:

By default, the git push command doesn’t transfer tags to remote
servers. You will have to explicitly push tags to a shared server
after you have created them. This process is just like sharing remote 
branches — you can run git push origin [tagname].

and:

If you have a lot of tags that you want to push up at once, 
you can also use the --tags option to the git push command. 
This will transfer all of your tags to the remote server that 
are not already there.

But when doing either a git pull origin [repo] or git fetch origin [repo] the tag list does not seem to be updated.

In this case try the following:

git pull origin [repo] --tags

And the list should contain all the tags in the remote repository.