This repo does not require frequent changes. In order to aviod commiting any changes without encrypting the content first do not clone the repo, just copy the encrypted content to a local file. Use:
ansible-vault view emergency_kit.md --vault-password-file ~/.vault_key
--- to viewansible-vault decrypt emergency_kit.md --vault-password-file ~/.vault_key
--- to decryptansible-vault encrypt --vault-pass-file ~/.vault_key emergency_kit.md
--- to encrypt
For more information about Ansible vault, watch encrypting Files with Ansible Vault.