Git alias:
fixup = "!f() { \
TARGET=$(git rev-parse \"$1\"); \
git commit --fixup=$TARGET && \
GIT_EDITOR=true git rebase --interactive --autosquash $TARGET~; \
}; f"
Example:
```shell
git fixup
See https://blog.filippo.io/git-fixup-amending-an-older-commit/
This alias is a slightly modified version.