svnsync failure when syncing with a repository that used ISO-8859-1 for log messages

I am attempting to use `svnsync` to create a local mirror of
`svn://svn.sv.gnu.org/nano`, but every time it fails at revision 619
(http://svn.savannah.gnu.org/viewvc?view=rev&root=nano&revision=619):
...
Copied properties for revision 617.
Transmitting file data ...
Committed revision 618.
Copied properties for revision 618.
svnsync: Error while replaying commit

The problem is that the log message for revision 619, 'Added Galician
translation by Jacobo Tarrío', was encoded in ISO-8859-1, and this is an illegal
UTF-8 byte sequence starting at the accented 'i'.

I attempted to set `log-encoding = ISO-8859-1` in my `~/.subversion/config`,
but this did not work. Moreover, looking through the source of `svnsync`, I
do not immediately see how to fix this problem. How do I tell `svnsync` to treat
the log messages from the repository as ISO-8859-1-encoded strings rather than
UTF-8-encoded strings?
Received on 2010-09-09 00:30:43 CEST