The modern, recommended way to use go mod download in GitHub Actions is alongside the official actions/setup-go action. This action includes built-in caching support, tracking your go.sum file to preserve the downloaded modules across workflow runs. Here is a production-ready workflow configuration:
Downloading modules at a specific step reduces redundant network requests across sequential jobs. The Standard Implementation github actions go mod download
Every time a GitHub Actions workflow triggers, it spins up a clean runner environment. By default, this environment lacks your project's external Go modules. The modern, recommended way to use go mod
Optimizing Go Dependency Management in GitHub Actions with go mod download github actions go mod download
Download steps can be isolated and cached independently from the build execution.