Clarify which branches should be compared #19832
Merged
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The description of coordinated merges in the Guide for Committers indicates that the tips of the master and openj9 branches in the openj9-omr repository should be compared to avoid promoting changes that have not passed an OMR Acceptance build. However, even if the tips of those branches are the same, it might be that the tip of the master branch in the omr repository does not match the tip of the master branch in the openj9-omr repository. Performing a coordinated merge in that circumstance would also promote changes that have not passed an OMR acceptance build.
Added that case to the list of branches to compare.
[skip ci]