Could not read from remote repository

Question

I have received the following error multiple times:

Could not read remote repository. Please make sure you have the correct access rights and the repo

Answer 1

In addition to setting the identity files in the ssh config, I also had to set the git remote to the right user - complete solution in https://www.keybits.net/post/automatically-use-correct-ssh-key-for-remote-git-repo/

vi ~/.ssh/config
Host github.com-myuser
  HostName github.com
  User git
  IdentityFile ~/.ssh/mykey

I made sure I had this identity file loaded with ssh-add -l

ssh-add -l
4096 SHA256:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX mykey (RSA)

Then I set my remote to include the right user

git remote set-url origin git@github.com-myuser:myuser/myrepo.git

Then the push worked

git push -u origin master
Enumerating objects: 146, done.
Counting objects: 100% (146/146), done.
Delta compression using up to 4 threads
Compressing objects: 100% (144/144), done.
Writing objects: 100% (146/146), 9.71 MiB | 7.48 MiB/s, done.
Total 146 (delta 10), reused 0 (delta 0)
remote: Resolving deltas: 100% (10/10), done.
To git@github.com-myuser:myuser/myrepo.git
 * [new branch]      master -> master

Voila