+
If you want to make sure that the output actually names an object in
your object database and/or can be used as a specific type of object
-you require, you can add "^{type}" peeling operator to the parmeter.
+you require, you can add "^{type}" peeling operator to the parameter.
For example, `git rev-parse "$VAR^{commit}"` will make sure `$VAR`
names an existing object that is a commit-ish (i.e. a commit, or an
annotated tag that points at a commit). To make sure that `$VAR`