Future Git.

fgit

#!/bin/bash
# fgit 48 commit -a -m "I am 48 hours into the future! For amusement only."
# For daring madmen or sleazy conmen, try:
#     git fetch && git rebase

function fgit() {
    local NOWEPOCH=$(date +%s)
    local INTO_FUTURE=$(($1*60*60))
    shift
    local COMMIT_DATE=$(($NOWEPOCH + $INTO_FUTURE))
    env GIT_AUTHOR_DATE=$COMMIT_DATE GIT_COMMITTER_DATE=$COMMIT_DATE git "$@"
}