Let's look at my previous example
$ svn up svn: Valid UTF-8 data (hex: 49 50 ) followed by invalid UTF-8 sequence (hex: a0 2d 56 69)
My issue last time I did not fully grok the error message. What the svn client tried to tell me is there is a filename in hexadecimal sequence of 49 50 a0 2d 56 69 that is causing the corruption.
Convert this hexadecimal sequence to ASCII and the full culprit filename known as shown below.
$ echo "\x49\x50\xa0\x2d\x56\x69" | xargs -0 printf IP�-Vi
What you can do right now is find any file that contains this sequence of characters of IP�-Vi and remove it.
$ ls IP�-Vi* $ rm -rf IP�-Vi*
Whoala ! There you have it.