....

mystery.sh

#!/bin/bash

start_date="2023-09-05"
end_date="2023-10-15"
commits=()

for commit in $(git log --format=%H | cut -d ' ' -f 1)
do
    commits+=("$commit")
done

reversed_commits=()

for ((i=${#commits[@]}-1; i>=0; i--))
do
    reversed_commits+=("${commits[i]}")
done

# Convierte las fechas a formato epoch (número de segundos desde el 1 de enero de 1970)
start_epoch=$(date -d "$start_date" +%s)
end_epoch=$(date -d "$end_date" +%s)

# Calcula la diferencia en segundos entre las dos fechas
day=86400 # 86400 segundos en un día
diff=$((end_epoch - start_epoch))

# Calcula la cantidad de intervalos que se deben dividir
intervals=61
interval_length=$((diff / intervals))

filter_commands=""
for ((i = 0; i < intervals; i++)); do
    current_date_epoch=$((start_epoch + i * interval_length))
    current_date=$(date -d "@$current_date_epoch" "+%Y-%m-%dT%H:%M:%S")
    commit=${reversed_commits[i]}
    echo "$commit $current_date"
    filter_commands+='if [ $GIT_COMMIT = '$commit' ]; then
         export GIT_AUTHOR_DATE="'$current_date'"
         export GIT_COMMITTER_DATE="'$current_date'"
     fi; '
done

FILTER_BRANCH_SQUELCH_WARNING=1 git filter-branch -f --env-filter "$filter_commands"