copy-folder-to-another-repo-keep-history.sh

# ---------------------------------- method 1 ----------------------------------

git clone https://github.com/cosmos/cosmos-sdk.git
git clone https://github.com/larry0x/simapp.git

cd cosmos-sdk
git checkout v0.47.2
git subtree split -P simapp -b split

cd ../simapp
git remote add source ../cosmos-sdk
git pull source split

# ---------------------------------- method 2 ----------------------------------
# https://medium.com/@ayushya/move-directory-from-one-repository-to-another-preserving-git-history-d210fa049d4b

git clone https://github.com/cosmos/cosmos-rust.git
git clone https://github.com/larry0x/neutron-proto.git

cd cosmos-rust
git filter-branch --subdirectory-filter proto-build -- --all
git reset --hard
git gc --aggressive 
git prune
git clean -fd
mkdir proto-build
mv * proto-build
git add -A
git commit -m 'move files'

cd ../neutron-proto
git remote add source ../../cosmos/cosmos-rust
git pull source main --allow-unrelated-histories
git remote rm source
git push