１．Gitのアップデート

 
# git clone git://git.kernel.org/pub/scm/git/git.git
Cloning into 'git'...
remote: Enumerating objects: 1930, done.
remote: Counting objects: 100% (1930/1930), done.
remote: Compressing objects: 100% (361/361), done.
remote: Total 326210 (delta 1690), reused 1706 (delta 1568), pack-reused 324280
Receiving objects: 100% (326210/326210), 105.47 MiB | 1.12 MiB/s, done.
Resolving deltas: 100% (244047/244047), done.
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