git checkout tag, git pull fails in branch

Question

I have cloned a git repository and then checked out a tag:

# git checkout 2.4.33 -b my_branch

This is OK, but when I try to run git pull<

Answer 1

Edit: For newer versions of Git, --set-upstream master has been deprecated, you should use --set-upstream-to instead:

git branch --set-upstream-to=origin/master master

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As it prompted, you can just run:

git branch --set-upstream master origin/master

After that, you can simply run git pull to update your code.