This repository is never used as standalone. It is usually imported in each pattern as a subtree.
In order to import the common/ the very first time you can use
https://github.com/hybrid-cloud-patterns/multicloud-gitops/blob/main/common/scripts/make_common_subtree.sh
In order to update your common subtree inside your pattern repository you can either use
https://github.com/hybrid-cloud-patterns/utilities/blob/main/scripts/update-common-everywhere.sh
or
do it manually by doing the following:
git remote add -f upstream-common https://github.com/hybrid-cloud-patterns/common.git
git merge -s subtree -Xtheirs -Xsubtree=common upstream-common/ha-vault
There are two different secret formats parsed by the ansible bits. Both are documented here