Checkout a specific branch from origin, and track it.
What if you enter <code>git checkout -b REL1_29</code> when you *should have entered* <code>git checkout -b REL1_29 origin/REL1_29</code>? Just tell git that you meant to track the branch in origin: <code>git branch --set-upstream-to=origin/REL1_29 REL1_29</code>
Add <code>GIT_TRACE=1</code> to your command to see more of what's going on. (Note that there are no spaces and no semicolon.)
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