Add test case for backporting to checked-out but non-live branch
This change requires the ~/old-version file to be populated in
train-dev's deploy container. (xref train-dev!34 (merged))
Bug: T317795
Edited by Ahmon Dancy
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This change requires the ~/old-version file to be populated in
train-dev's deploy container. (xref train-dev!34 (merged))
Bug: T317795