workflows: add stamp file in openshift/os
to ensure we push rebases
#1776
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The
create-pull-request
action currently only force-pushes branches if their diff has changed. However, if we've meanwhile landed a parallelfedora-coreos-config
update PR via a different branch, the diff might be the same but the base commit will be different. We need to push the branch in this case too, or else the PR will be left unmergeable due to conflicts. As a workaround, write the base commit ID into a stamp file in the root ofopenshift/os
, so the diff will change whenever the base does.Works around peter-evans/create-pull-request#1191.