git-svn error when cloning apache repo

I'm trying to clone the Apache Ivy repo and got this error. What does
the "Using higher level of URL" mean?  Also, of course, what does the
error message mean?

$ git svn clone https://svn.apache.org/repos/asf/incubator/ivy/core/ ivy-core -T trunk -b branches -t tags
Initialized empty Git repository in .git/
Using higher level of URL: https://svn.apache.org/repos/asf/incubator/ivy/core => https://svn.apache.org/repos/asf
W: Ignoring error from SVN, path probably does not exist: (175002): RA layer request failed: REPORT request failed on '/repos/asf/!svn/bc/100': REPORT of '/repos/asf/!svn/bc/100': Could not read chunk size: Secure connection truncated (https://svn.apache.org)
branch_from: /incubator/ivy/tags => /incubator/ivy/tags/1.4.1
Found possible branch point: https://svn.apache.org/repos/asf/incubator/ivy/tags/1.4.1 => https://svn.apache.org/repos/asf/incubator/ivy/core/tags/1.4.1, 499505
Initializing parent: tags/1.4.1@499505
Found possible branch point: https://svn.apache.org/repos/asf/incubator/ivy/trunk => https://svn.apache.org/repos/asf/incubator/ivy/tags/1.4.1, 488008
Initializing parent: tags/1.4.1@488008
RA layer request failed: REPORT request failed on '/repos/asf/!svn/vcc/default': REPORT of '/repos/asf/!svn/vcc/default': 400 Bad Request (https://svn.apache.org) at /home/jingxue/bin/git-svn line 3155

Any thoughts are appreciated.

Thanks.
-- 
Jing Xue