Github user srdo commented on the issue:
https://github.com/apache/storm/pull/2074
If you do the following, your new branch gets copied onto this one.
`git checkout STORM-1290`
`git reset --hard STORM-1290_1`
`git push --force`
This sets the STORM-1290 branch to contain exactly the same commits as
STORM-1290_1. When you then force push, the remote copy gets overwritten and
this PR gets updated.
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