gistfile1.txt

To get Git to diff between your odt/odp/ods files you will need to do the following things:

Install a conversion tool
$ sudo yum install odt2txt

Create your git config info directory if it's not already there
$ mkdir -p ~/.config/git/info

Add in attributes (you can paste this straight in or edit the file accordingly)
$ cat > ~/.config/git/info/attributes <<DELIM
*.ods diff=odf
*.odt diff=odf
*.odp diff=odf
DELIM


Add a Git diff filter (again, you can paste this straight in or edit the file accordingly)
$ cat >> ~/.gitconfig <<DELIM

[diff "odf"]
        binary = true
        textconv = odt2txt
DELIM


And that's it. Job done.