push existing local branch to remote

0. create local branch

#syntax
git checkout -b name_of_local_branch

#example
git checkout -b experimental

1. push local branch

#syntax
git push my_repo name_of_local_branch:refs/heads/name_of_remote_branch

#example
git push origin experimental:refs/heads/experimental

2. create local references

# syntax

mate .git/config

[branch "name_of_local_branch"]
  remote = my_repo
  merge = refs/heads/name_of_remote_branch


#example

mate .git/config

[branch "experimental"]
  remote = origin
  merge = refs/heads/experimental

3. pull existing remote branch and track

# syntax
git fetch
git checkout --track -b name_of_local_branch origin/name_of_remote_branch

# example
git fetch
git checkout --track -b experimental origin/experimental