Trying to use insteadOf trick to use different SSH keys for separate github accounts - not working

Hello,

Here's what I'm trying to do, that i need your help with to make work:

I have 2 github accounts, each with their own SSH key: my home account (default SSH key) and my work account (alternative SSH key). I can create a virtual hostname in my ~/.ssh/config like so:

Host work.github.com
     Hostname github.com
     IdentityFile ~/.ssh/id_rsa-work

and then clone repos with:

git clone git@work.github.com/MyCompany/la-repo.git

However, I'm trying to use Go, which needs to access every repo host as 'github.com', and won't support my little SSH hostname trick by default.

I found out about the 'insteadOf' setting, and thought it would work. So I added this to my global git config:

[url "git@github.com:MyCompany/"] insteadOf = git@work.github.com:MyCompany/

and left the SSH hostname setting where it was. Then I tried doing:

git clone git:github.com/MyCompany/la-repo.git

But it won't work. With GIT_TRACE=2, I get:

$ GIT_TRACE=2 git clone git@github.com:MyCompany/la-repo.git
07:46:27.627557 git.c:344               trace: built-in: git 'clone'
'git@github.com:MyCompany/la-repo.git'
Cloning into 'la-repo'...
07:46:27.629623 run-command.c:626       trace: run_command: 'ssh'
'git@github.com' 'git-upload-pack '\''MyCompany/la-repo.git'\'''
ERROR: Repository not found.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights and the repository exists.

Can anyone help me with this?

Thanks

Regards,
     Asfand

On Sat, Dec 16, 2017 at 07:50:02AM +0000, Asfand Qazi wrote:

If I'm reading it right, you have the config backwards. You want to convert git@github.com from Go's invocation of Git into your special "work" alias. So:

  [url "git@work.github.com:MyCompany/"]
  insteadOf = "git@github.com:MyCompany/"

-Peff

Thanks it worked! I was reading all the tutorials wrong all this time...

Regards,
     Asfand

On 16 December 2017 at 09:48, Jeff King <peff@peff.net> wrote: