On my Windows, I have unix like tools installed.
I can use update_revision.sh.
This is what I obtain :
PS C:\Users\Gerard\Documents\CodeBlocks_SVN\CodeBlocks_src> bash
bash.exe"-3.1$ ./update_revision.sh
Using 'svn --xml info' to get the revision
Found revision: '11918' '2019-11-16 13:45:08'
bash.exe"-3.1$