git fetch pull checkout区别

Git中从远程的分支获取最新的版本到本地有这样2个命令：
1. git fetch：相当于是从远程获取最新版本到本地，不会自动merge

<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span style="line-height: 19px; font-family: 'Trebuchet MS', Tahoma, Arial; font-size: 13px;"><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">    </span></span><br style="line-height: 23px;" /><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">git fetch origin master</span><br style="line-height: 23px;" /><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">git log </span><span class="pun" style="line-height: 23px; color: rgb(102, 102, 0);">-</span><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">p master</span><span class="pun" style="line-height: 23px; color: rgb(102, 102, 0);">..</span><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">origin</span><span class="pun" style="line-height: 23px; color: rgb(102, 102, 0);">/</span><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">master</span><br style="line-height: 23px;" /><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">git merge origin</span><span class="pun" style="line-height: 23px; color: rgb(102, 102, 0);">/</span><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">master</span></p>

    以上命令的含义：
   首先从远程的origin的master主分支下载最新的版本到origin/master分支上
   然后比较本地的master分支和origin/master分支的差别
   最后进行合并
   上述过程其实可以用以下更清晰的方式来进行：

<p style="margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span style="font-family: 'Trebuchet MS', Tahoma, Arial; font-size: 12px; line-height: 23px;"><span style="line-height: 19px;"><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">git fetch origin master</span><span class="pun" style="line-height: 23px; color: rgb(102, 102, 0);">:</span><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">tmp</span></span></span>
<span style="font-family: 'Trebuchet MS', Tahoma, Arial; font-size: 12px; line-height: 23px;"><span style="line-height: 19px;"><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">git diff tmp </span></span></span>
<span style="font-family: 'Trebuchet MS', Tahoma, Arial; font-size: 12px; line-height: 23px;"><span style="line-height: 19px;"><span class="pln" style="line-height: 23px; color: rgb(0, 0, 0);">git merge tmp</span></span></span></p>

    从远程获取最新的版本到本地的test分支上
   之后再进行比较合并
2. git pull：相当于是从远程获取最新版本并merge到本地

<p style="line-height: 23px; margin-top: 0px; margin-bottom: 10px; padding-top: 0px; padding-bottom: 0px;"><span class="pln" style="color: rgb(0, 0, 0);">git pull origin master</span></p>

上述命令其实相当于git fetch 和 git merge
在实际使用中，git fetch更安全一些
因为在merge前，我们可以查看更新情况，然后再决定是否合并

结束

转载： http://www.tech126.com/git-fetch-pull/