kszucs commented on a change in pull request #9767:
URL: https://github.com/apache/arrow/pull/9767#discussion_r603423545
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File path: dev/tasks/crossbow.py
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@@ -322,7 +322,11 @@ def create_tree(self, files):
def create_commit(self, files, parents=None, message='',
reference_name=None):
- parents = parents or []
+ if parents is None:
+ # by default use the main branch as the base of the new branch
+ # required to reuse github actions cache across crossbow tasks
Review comment:
Due to the macOS credits which have been consumed last month.
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