moving git commits from one tree to another

move_git_commits.sh

# moving git commits from one tree to another, preserving original git commit metadata like date/time
# (creating a new hash, of course)

# find current commits
git log jcs --author=jcs@jcs.org --no-merges --oneline --no-abbrev-commit --reverse | sed 's/ .*//' > commits

# in new git tree, for each $hash in $commits
git --git-dir=/path/to/old/tree/.git format-patch -k -1 --stdout <hash> | git am -3 -k