Unable to forward gpg agent

Question

My goal is to make commit on a remote server.

The problem is when I tried to $ git commit -m "test". It throws error

mini-mini-01:~/test$ git commit -m "a"
error: gpg failed to sign the data
fatal: failed to write commit object

Also I tried $ echo '' | gpg --clearsign. It throws error

echo '' | gpg --clearsign
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512


gpg: signing failed: Inappropriate ioctl for device
gpg: [stdin]: clear-sign failed: Inappropriate ioctl for device

What I've did:

1. forward the ssh agent, I can commit and push without an issue. However, in GitHub.com it is shown as Unverified.

~/.ssh/config

Host mini-01.local
  ForwardAgent yes
  ForwardX11 yes
  ForwardX11Trusted yes
  RemoteForward /run/user/1000/gnupg/S.gpg-agent /Users/jason/.gnupg/S.gpg-agent

2. Follow this guide https://superuser.com/a/1329299, including copying pubring.pbx to the remote server.

3. update git config

$ git config user.email <my email from github>
$ git config user.signingkey <the key from gpg --list-keys --keyid-format LONG>
$ git config commit.gpgsign true

What I've checked:

1. gpg --list-keys in remote server

mini-01@mini-01:~/test$ gpg --list-keys --keyid-format SHORT
/home/mini-01/.gnupg/pubring.kbx
----------------------------------
pub   secret/secret 2023-02-27 [SC] [expires: 2024-02-27]
      secret
uid         [ultimate] secret <secret>
sub   secret/secret 2023-02-27 [E] [expires: 2024-02-27]