You can list existing git aliases using --get-regexp:
git config --get-regexp '^alias\\.'
To search aliases, add the following to your .gitconfig under [alias]:
aliases = !git config --list | grep ^alias\\\\. | cut -c 7- | grep -Ei --color \\"$1\\" "#"
Then you can:
git aliases - show ALL aliasesgit aliases commit - only aliases containing “commit”