git svn，我应该如何初始化我的svn repo并与我现有的git repo同步

Question

我目前在url_git上运行git repo，在url_svn上运行新的svn repo。

我想在git svn -plugin中使用svn repo，我用以下代码克隆了repo：

git svn clone --username user url_svn/project_svn

当我使用例如

时

git svn rebase
or
git svn dcommit

一切正常

当我尝试将我的git repo推送到svn时

git clone git_url/project_git
cd project_git
git svn init url_svn/project_svn

取：

git svn fetch
        A       initial_commit
r1 = c9e1ab586b658f3f5518e3ed36e87ded675a4685 (refs/remotes/git-svn)

Rebase / dcommit：

git svn rebase
Unable to determine upstream SVN information from working tree history

git svn dcommit
Unable to determine upstream SVN information from HEAD history.
Perhaps the repository is empty. at /usr/lib/git-core/git-svn line 856.

我需要做些什么来实现这个目标？