utils/update-checkout: Do any git checkout
before the git fetch
.
#7165
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Calling
git fetch
updates .git/FETCH_HEAD and marks all branchesbesides the currently checked out branch as not-for-merge. So to
ensure that the branch we want to merge is available for merging, we
must do a checkout of that branch before updating the FETCH_HEAD file.
Fixes #46385.