example.bash

# Register a filter command for Git commands
git config --system --add mine.filter fzf

# Show checked-out branches in reflog (distinct, and not sorted by the checked-out time)
git config --system --add alias.head-history "\!f() { git reflog HEAD | grep 'checkout:' | awk '\$0=\$NF' | sort | uniq; }; f"

# Select and switch HEAD to the branch
git config --system --add alias.switch-to "\!f() { local -r ref=\"\$(git head-history | \$(git config --get mine.filter))\"; [[ -n \"\$ref\" ]] && git switch \"\$ref\"; }; f"