由于它不需要不断地与中央服务器通信，几乎每个命令都在不到一秒的时间内运行(显然git的push/pull/fetch较慢，因为它们必须初始化SSH连接)。分支要容易得多(一个简单的命令就可以分支，一个简单的命令就可以合并)

“为什么Git比X好”概述了Git相对于其他scm的各种优缺点。

简要:

Git tracks content rather than files Branches are lightweight and merging is easy, and I mean really easy. It's distributed, basically every repository is a branch. It's much easier to develop concurrently and collaboratively than with Subversion, in my opinion. It also makes offline development possible. It doesn't impose any workflow, as seen on the above linked website, there are many workflows possible with Git. A Subversion-style workflow is easily mimicked. Git repositories are much smaller in file size than Subversion repositories. There's only one ".git" directory, as opposed to dozens of ".svn" repositories (note Subversion 1.7 and higher now uses a single directory like Git.) The staging area is awesome, it allows you to see the changes you will commit, commit partial changes and do various other stuff. Stashing is invaluable when you do "chaotic" development, or simply want to fix a bug while you're still working on something else (on a different branch). You can rewrite history, which is great for preparing patch sets and fixing your mistakes (before you publish the commits) … and a lot more.

有一些缺点:

There aren't many good GUIs for it yet. It's new and Subversion has been around for a lot longer, so this is natural as there are a few interfaces in development. Some good ones include TortoiseGit and GitHub for Mac. Partial checkouts/clones of repositories are not possible at the moment (I read that it's in development). However, there is submodule support. Git 1.7+ supports sparse checkouts. It might be harder to learn, even though I did not find this to be the case (about a year ago). Git has recently improved its interface and is quite user friendly.

在最简单的用法中，Subversion和Git是差不多的。两者之间没有太大区别:

svn checkout svn://foo.com/bar bar
cd bar
# edit
svn commit -m "foo"

and

git clone git@github.com:foo/bar.git
cd bar
# edit
git commit -a -m "foo"
git push

Git真正的亮点在于分支和与其他人一起工作。

我非常喜欢能够在Git中管理源代码的本地分支，而不会混淆中央存储库的水。在许多情况下，我将从Subversion服务器签出代码并运行本地Git存储库，只是为了能够做到这一点。初始化Git存储库不会因为到处都是烦人的.svn文件夹而污染文件系统，这一点也很棒。

至于Windows工具的支持，TortoiseGit处理基本的很好，但我仍然喜欢命令行，除非我想查看日志。我真的很喜欢Tortoise{Git|SVN}在读取提交日志时的帮助方式。

Subversion仍然是一种更常用的版本控制系统，这意味着它有更好的工具支持。您会发现几乎所有IDE都有成熟的SVN插件，并且有很好的资源管理器扩展可用(如TurtoiseSVN)。除此之外，我不得不同意Michael的观点:Git并不比Subversion更好或更差，它是不同的。

由于它不需要不断地与中央服务器通信，几乎每个命令都在不到一秒的时间内运行(显然git的push/pull/fetch较慢，因为它们必须初始化SSH连接)。分支要容易得多(一个简单的命令就可以分支，一个简单的命令就可以合并)

这一切都是关于做某事所需的易用性/步骤。

如果我在我的PC/笔记本电脑上开发一个项目，git会更好，因为它的设置和使用要容易得多。 合并时不需要服务器，也不需要一直输入存储库URL's in。

如果只有两个人，我会说git也更简单，因为你可以互相推拉。

一旦你超越了这一点，我就会选择颠覆，因为在这一点上你需要设置一个“专用”服务器或位置。

使用git可以像使用SVN一样做到这一点，但是git的好处被需要执行额外步骤来与中央服务器同步所抵消。在SVN中，你只需要提交。在git中，你必须先执行git commit，然后再执行git push。额外的步骤很烦人，因为你最后做了太多。

SVN也有更好的GUI工具的好处，但是git生态系统似乎正在迅速追赶，所以从长远来看我并不担心这一点。