How to point Go module dependency in go.mod to a latest commit in a repo?

Just 'go get' at the commit hash you want:

go get github.com/someone/some_module@af044c0995fe

'go get' will correctly update the dependency files (go.mod, go.sum).

More information: https://github.com/golang/go/wiki/Modules#how-to-upgrade-and-downgrade-dependencies

In addition the answer from Everton on using go get github.com/someone/some_module@af044c0995fe to get a specific commit, you can also use branch names such as:

• go get github.com/someone/some_module@master
• go get github.com/someone/some_module@dev_branch

Those examples get the latest commit on the corresponding branch.

It will still be recorded as a pseudo-version in your go.mod file, such as v0.0.0-20171006230638-a6e239ea1c69. (This helps provide a simple total ordering across all versions based on standard semver ordering).

If you want to temporarily substitute a dependency to a local directory (for example if you work on 2 modules sumultaneously) you can add replace statement at the end of go.mod file:

module example.com/mypkg

go 1.15

require (
  gitlab.com/someone/a_package v0.14.2
)

replace gitlab.com/someone/a_package => ../my_forks/a_package