将SVN存储库的一部分合并到具有历史记录的另一个存储库

A

B

    repo A                                repo B
       branches                          branches 
             sub-branch1                      sub-branch B1
              sub-branch2                      sub-branch B2 
       trunk                             trunk 

  svnadmin dump /location/of/repoB | svndumpfilter include subbranch2 > my.dump

  svnadmin load /location/of/repoA --parent-dir branches < my.dump

svnadmin dump

svnadmin load