diff --git a/home-manager/common.nix b/home-manager/common.nix
index 3ecbb38..e4bb503 100644
--- a/home-manager/common.nix
+++ b/home-manager/common.nix
@@ -35,9 +35,11 @@ in
       {
         cat = lib.mkDefault "bat --paging=never";
         nixfix = lib.mkDefault "nix fmt ./**/*.nix";
+        # use eval $(aws-export-credentials) to expose them to environment
         aws-export-credentials = lib.mkDefault "aws configure export-credentials --format env --profile";
         # use curl-aws --aws-sigv4 "aws:amz:region:service"
         curl-aws = lib.mkDefault "curl -H \"X-Amz-Security-Token: $AWS_SESSION_TOKEN\" --user \"$AWS_ACCESS_KEY_ID:$AWS_SECRET_ACCESS_KEY\"";
+        git-sync-remote = lib.mkDefault "git remote update origin --prune";
       }
       // (
         if isDarwin then