diff --git a/src/nextjournal/start_command.clj b/src/nextjournal/start_command.clj
index 6014c8f..636b747 100644
--- a/src/nextjournal/start_command.clj
+++ b/src/nextjournal/start_command.clj
@@ -1,11 +1,26 @@
 (ns nextjournal.start-command
   (:require [clojure.string :as str]))
 
+(def garden-nrepl-sha "d64532bf7c16565b0dfc825bc27eafdb453c1a61")
+
+(defn fetch-deps-command [{:as opts
+                           :keys [garden-alias sdeps]}]
+  (filterv some?
+           ["clojure"
+            "-P"
+            "-Srepro"
+            "-Sdeps" (pr-str (merge sdeps {:deps {'io.github.nextjournal/garden-nrepl {:git/sha garden-nrepl-sha}}}))
+            "-J-Dclojure.main.report=stdout"
+            (when-some [extra-aliases (get garden-alias :nextjournal.garden/aliases)]
+              (when-not (every? keyword? extra-aliases) (throw (ex-info "`:nextjournal.garden/aliases` must be a vector of keywords" opts)))
+              (str "-A" (str/join extra-aliases)))
+            "-A:nextjournal/garden"]))
+
 (defn start-command [{:as opts
                       :keys [skip-inject-nrepl garden-alias sdeps]
                       :or {sdeps {}}}]
   (let [sdeps (cond-> sdeps
-                (not skip-inject-nrepl) (merge {:deps {'io.github.nextjournal/garden-nrepl {:git/sha "d64532bf7c16565b0dfc825bc27eafdb453c1a61"}}
+                (not skip-inject-nrepl) (merge {:deps {'io.github.nextjournal/garden-nrepl {:git/sha garden-nrepl-sha}}
                                                 :aliases {:nextjournal/garden-nrepl {:exec-fn 'nextjournal.garden-nrepl/start!}}}))]
     (filterv some?
              ["clojure"