[remote "origin"]
        url = git@github.com:xxxx/xxxx.git
        url = sakura@sakusaku.sakura.ne.jp/yyyy/yyyy.git
        fetch = +refs/heads/*:refs/remotes/origin/*

Counting objects: 3, done.
Compressing objects: 100% (3/3), done.
Writing objects: 100% (3/3), 332 bytes | 0 bytes/s, done.
Total 3 (delta 2), reused 0 (delta 0)
remote: Resolving deltas: 100% (2/2), completed with 2 local objects.
To git@github.com:xxxx/xxxx.git
   3452346es2..456h8b2  master -> master
fatal: Unable to create '/var/www/html/xxx/.git/refs/remotes/origin/master.lock': ????????

origin  git@github.com:xxxx/xxxx.git (fetch)
origin  git@github.com:xxxx/xxxx.git (push)
origin  sakura@sakusaku.sakura.ne.jp/yyyy/yyyy.git (push)

git remote add origin git@github.com:xxxx/xxxx.git
git remote set-url --add origin sakura@sakusaku.sakura.ne.jp/yyyy/yyyy.git

git remote add origin git@github.com:xxxx/xxxx.git
git remote set-url --add --push origin git@github.com:xxxx/xxxx.git
git remote set-url --add --push origin sakura@sakusaku.sakura.ne.jp/yyyy/yyyy.git