Multiple git account – SSH connect PUSH/Pull ERROR: Repository not found Problem Fixing

Whenever you will use multiple github account repo with SSH Connect then normanlly you will git error like this.

~/projects/demo2$ git push --set-upstream origin main
ERROR: Repository not found.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights

Now we will solve this problem

1-First you will add new Host to System ssh folder. Please see Bold part

BOOK-VKAD2MI9OH:~$ cd ~/.ssh
BOOK-VKAD2MI9OH:~/.ssh$ nano config
Host github.com
  HostName github.com
  User git
  IdentityFile ~/.ssh/mac_rsa
  IdentitiesOnly yes
  AddKeysToAgent yes
Host bitbucket.org
  HostName bitbucket.org
  User git
  IdentityFile ~/.ssh/mac_rsa
  IdentitiesOnly yes
  AddKeysToAgent yes
Host github-demo
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa_github_demo
  IdentitiesOnly yes
  AddKeysToAgent yes

2- Then We will change Remote url

BOOK-VKAD2MI9OH:~/projects/demo2$ git remote set-url origin git@github-demo:repo-user/demo2.git

Please note above we are using git@github-demo not git@github.com because github.com already working for other account repo.