Find what commit dir is

diff.sh

#!/bin/bash

#  ANvänds = ./diff.sh swift-modularity/ Modularity/ "*.php" "."

DIR_1="$1"
DIR_2="$2"
GLOB="$3"
WHERE="$4"

cd $DIR_1
ORIGINAL_HASH=$(git ls-files  -- "$GLOB" -s "$WHERE" | git hash-object --stdin)

git ls-files  -- "$GLOB" -s . 

cd ..

cd $DIR_2 

git checkout master

while [ true ]; do
    git checkout "HEAD^"
    CHECKED_OUT_HASH=$(git ls-files  -- "$GLOB" -s . | git hash-object --stdin)
    if [ "$ORIGINAL_HASH" = "$CHECKED_OUT_HASH" ]; then
        echo $CHECKED_OUT_HASH
        echo "#################################################################################################"
        exit
    else
        echo "."
    fi
    
    #sleep 1s
    
done