我想将项目从SVN迁移到GitHub。

SVN项目的结构为：

Project URL
    trunk
        application1
        application2
        application3
    branches
        version1.0
            application1
            application2
            application3
        version2.0
            application1
            application2
            application3
        version3.0
            application1
            application2
            application3
        version4.0
            application1
            application2
            application3

我想在GitHub上拥有四个文件夹：

application1
    master 
    version1.0
    version2.0
    version3.0
    version4.0
application2
    master 
    version1.0
    version2.0
    version3.0
    version4.0
application3
    master 
    version1.0
    version2.0
    version3.0
    version4.0
application4
    master 
    version1.0
    version2.0
    version3.0
    version4.0

我尝试使用命令（对于一个应用程序）：

git svn clone --username $username  --trunk=trunk/application1                  
      --branches=braches/version1/application1    --branches=braches/version2/application1   --branches=braches/version3/application1  
--branches=braches/version4/application1 
 --authors-file=authors_modified.txt  $svnURL   application1    --no-metadata`

但是我得到了错误

W: Ignoring error from SVN,path probably does not exist: (160013): 
Filesystem has no item: File not found: revision 100,path '/branches'
W: Do not be alarmed at the above message git-svn
 is just searching aggressively for old history.

如果这种迁移可行，那么，这是怎么了？