Is there a way to make go dep working with private repo ( with ssh key )?

I've read a few tickets on Github about this issue, but was anyone able to make it work somehow? I'm trying to use go dep for some internal packages but it always fail / get stuck...

in your .gitconfig use the "insteadof" directive and always use ssh

# Enforce SSH
[url "ssh://git@github.com/"]
  insteadOf = https://github.com/
[url "ssh://git@gitlab.com/"]
  insteadOf = https://gitlab.com/
[url "ssh://git@bitbucket.org/"]
  insteadOf = https://bitbucket.org/

ref: https://stackoverflow.com/questions/11200237/how-do-i-get-git-to-default-to-ssh-and-not-https-for-new-repositories

gogs/gitea with custom ssh port:
[url "ssh://git@git.domain.com:10022/"]
    insteadOf = https://git.domain.com/

This what I have but for some reason the git CLI is stuck during git ls-remote / git-upload-pack ... :/

Hey, what I have done is created a constraint in the .toml file and set the repo source with a github token. For example https://@github.com/owner/repo.git That way dep will be able to download the repo. I haven't experimented with using a ssh key though.

Unfortunately it's not for github :/ This issue only applies for stash / gitlab / bitbucket

https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md#constraint
dep use installed git tool to download dependencies

As @PurpleGecko mentioned it's using local git command. 
What I've done is setup ssh-agent and added ssh key. Then go dep/get worked just fine for me. For example if you have ssh key in ~/.ssh/private-repo then:

$ ssh-add ~/.ssh/private-repo

Also, if you do it in the docker and you can't interact with console then you would need to add host to known_hosts before adding key. Below is example for bitbucket. 

$ ssh-keyscan bitbucket.org >> ~/.ssh/known_hosts