Public key for google chrome in Fedora 21

While updaing your system Fedora you might have received this problem

$sudo yum update

warning: /var/cache/yum/x86_64/21/google-chrome/packages/google-chrome-stable-42.0.2311.135-1.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 7fac5991: NOKEY

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Change Wrong author email on commits pushed on remote git repository

I did forgot to set my username and email in git configuration and pushed my code to my remote repository. On searching for much time, i came to know working solution to change author email on commits already pushed on remote repository.

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