refactor: fix the rebake help docs

internal/commands/rebake.go

@@ -82,7 +82,7 @@ func (cmd ReBake) Execute(args []string) error {
 
 func (cmd ReBake) Usage() jhanda.Usage {
 	return jhanda.Usage{
-		Description:      "re-bake (aka record bake) builds a tile from a bake record if the current HEAD is does not match the record the command will fail",
+		Description:      "re-bake (aka record bake) builds a tile from a bake record. You must check out the repository to the revision of the source_revision in the bake record before running this command.",
 		ShortDescription: "re-bake constructs a tile from a bake record",
 		Flags:            &cmd.Options,
 	}