account Refer To Link

Change SHH config#

    vim $HOME/.ssh/config

Host github.com-work
	HostName github.com
	User git
	IdentityFile ~/.ssh/id_rsa_activehacker

Host github.com-personal
	HostName github.com
	User git
	IdentityFile ~/.ssh/id_rsa_jexchan

Change project git config#

vim .git/config

Modify config#

[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
        ignorecase = true
        precomposeunicode = true
[remote "origin"]
        - url = git@github.com:<username>/<project>.git
        + url = git@github.com-personal:<username>/<project>.git
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
        remote = origin
        merge = refs/heads/master
[user]
        name = <username>
        email = <email>