when you have mulitple GPG keys use git config --local user.signingkey <key id> to set for per repo basis. To get the key id gpg --list-secret-keys --keyid-format LONG <email> form the response first line sec 4096R/0C925B3BF9CD5924 2019-01-08 the key id will be 0C925B3BF9CD5924