# Pastebin kJYL9NNK
root@pink ~ # cat ~/.ssh/config 
Host github.com-prometheus-exp
    User git
    Hostname github.com
    IdentityFile=/root/.ssh/prometheus_deploy_key

Host github.com-borg-backup
    User git
    Hostname github.com
    IdentityFile=/root/.ssh/borg_backup_deploy_key