How does Argo CD authenticate with private Git repositories?

Answer: It supports SSH keys, username/password, and other methods configured in the 'argocd-repositories' secret

Explanation

Argo CD supports authentication with private Git repositories using various methods including SSH keys, username/password, and OAuth tokens. These credentials are stored in the 'argocd-repositories' secret in the Argo CD namespace. You can configure them using the 'argocd repo add' command or through the UI.