Cache .git versus persist_to_workspace

[floscher]

Please note that the checkout step is currently broken when caching the .git directory and you try to build a tag:

Checkout fails on git-tags, when .git directory is already present

For one of my projects I cache the .git directory between builds, similar to https://circleci.com/docs/2.0/caching/#source-caching Now I found out that the checkout step fails as soon as the build is triggered by pushing a git-tag to GitHub: https://circleci.com/gh/JOSM/wikipedia/37#action-103 This is caused by line 39 in the checkout.sh: git fetch --force origin "refs/tags/${CIRCLE_TAG}" This line fetches the commit associated with the tag, but does not create the tag in the local repositor…