repository are already installed but they are not correct for this package.

日本語でOK

The GPG keys listed for the "CentOS-6 - Debuginfo" repository are already installed but they are not correct for this package.

debuginfo-install時に発生。

# cat /etc/yum.repos.d/CentOS-Debuginfo.repo 
[base-debuginfo]
name=CentOS-6 - Debuginfo
baseurl=http://debuginfo.centos.org/6/$basearch/
-gpgcheck=1
+gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-Debug-6
-enabled=0
+enabled=1

修正&Redo

 From   : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Is this ok [y/N]: y
Key imported successfully

素敵過ぎる。