git-svn problems with cloning

Hi,

I'm trying to git-svn clone repository. I have encountered two problems. For the the first one I have a workaround, but I'm lost with the second.

1. I have a problem with one commit which tries to create a file name
which is not acceptable by file system (fat32). I tried to ignore this
files by using --ignore-paths, but it does not work. Am I using
ignore-paths incorrectly or do I have to find a different workaround?
(I'm thinking about using specific revisions or using filter-branch).

Here's what's happening:

$ git svn clone -s -r164508 '--ignore-paths=.*https:.*' <url> Initialized empty Git repository in <path>/.git/ Using higher level of URL: <url> => <url> mkdir .git/svn/refs/remotes/tags/https:: Invalid argument at /usr/local/stow/git-1.7.4/libexec/git-core/git-svn line 3856

$ svn log -v -r164508 <url>
[...]
   A /<project>/tags/https:/blahblah

$ mkdir https: mkdir: cannot create directory `https:': Invalid argument

2. I have specified revision that do not have invalid file names in it
and it worker, but git reported error later on, I suppose due to
--ignore-paths:

$ git svn clone -s '--ignore-paths=^/branches/<list of branches>' '--ignore-paths=^/tags/<list of tags>' -r164510:HEAD <url> [...] r166131 = 86085ee643d1b8ecb60f6ec3212904a24dd4d71a (refs/remotes/<ignored branch 1> ) [...] r167889 = 1fdb8124d72e1bc417f7fe06051a5280675dc73b (refs/remotes/<ignored branch 2>)

	M	[...]	
Found merge parent (svn:mergeinfo prop):
1fdb8124d72e1bc417f7fe06051a5280675dc73b

[...]
W: Cannot find common ancestor between
689e9a85f91eb71e37ccd79063e0a5aaa37d1b74 and
5d04d29ab3c76835facade1859aed30129abecf4. Ignoring merge info.

Found merge parent (svn:mergeinfo prop): 039125717428084cdf4d38b8a98f431a9b656f1c

Couldn't find revmap for <url>/<ignored branch 3>/path fatal: ambiguous argument '86085ee643d1b8ecb60f6ec3212904a24dd4d71a^..1fdb8124d72e1bc417f7fe06051a5280675dc73b': unknown revision or path not in the working tree.

Use '--' to separate paths from revisions

rev-list 86085ee643d1b8ecb60f6ec3212904a24dd4d71a^..1fdb8124d72e1bc417f7fe06051a5280675dc73b: command returned error: 128

I'm not sure how to deal with this...