Global gitconfig

# see where current gitconfig comes from
git config --list --show-origin

# edit global gitconfig
git config --global --edit
git config --global -e

Increase Buffer Size

When you have a large delta in a repository that needs a push, you may need to increase the buffer size

git config http.postBuffer 524288000

Fast forward only

# For current repo
git config pull.ff only

# for current machine
git config --global pull.ff only 

Set default branch name created as custom_name

# new projects will start with custom_name branch
git config --global init.defaultBranch custom_name

Enable Git detailed log

export GIT_TRACE_PACKET=1
export GIT_TRACE=1
export GIT_CURL_VERBOSE=1