#!/bin/bash
mkdir depot
cd depot
for i in {1..1}
do
   mkdir $i
   cd $i
   for j in {1..4}
   do
     mkdir $j
     cd $j
     for k in {1..15}
     do
       touch "my_filename${k}_-2.txt"
     done
     cd ..
   done
   cd ..
done
cd depot
git init
git add .
git commit -m "1st commit"
rename -- '_-2' '-2' */*/*_-2.txt
git add -A
git commit -m "BUG => some files deleted, other copied, but all should be renamed!"