gpg: signing failed: No pinentry
The command
brew install pinentry
Aparrently installed the pinentry into different path, than the gpg-agent.conf file has. If someone runs into this problem, just do
which pinentry-mac
And the path it gives you, put into gpg-agent.conf file.
If there is no gpg-agent.conf file found in ~/.gnupg/ directory, then create it.
touch ~/.gnupg/gpg-agent.conf
Very Important
Run gpgconf --kill gpg-agent after change the conf file. Thanks to Jérémie Boulay