Platform engineering is the discipline of designing and building toolchains and workflows that enable self-service capabilities for software engineering organizations in the cloud-native era.

Platform Engineering

You will need to add them a k8s `secret` resource and label them as a repository. Here's an <https://argo-cd.readthedocs.io/en/stable/operator-manual/declarative-setup/#repositories|example>

Just an addition to Sibu’s comment, in case all repos are under the same path, you can make use of Repository Credentials as an umbrella secret for all repos.