list

Prints the canonical and every clone beside it, with each one's branch, how many uncommitted changes it holds and how many commits it has that its upstream does not.

gitto list

Prints the canonical and every clone beside it, with each one's branch, how many uncommitted changes it holds and how many commits it has that its upstream does not.

$ gitto list
canonical storefront  main
storefront-auth-fix      auth-fix               dirty=0     unpushed=0
storefront-search        feat/search-ranking    dirty=3     unpushed=2

The two counts are what remove reads, so this is the list of what you would lose.