function isGitSyncimport { isGitSync } from "https://deno.land/x/is_git@v0.1.1/mod.ts"; isGitSync(filepath?): booleanReturn true if the file apth is a git repository. Requires the --allow-read flag. Parametersoptionalfilepath = [UNSUPPORTED]default is Deno.cwd(), the current working directory. Returnsboolean