diff --git a/Justfile b/Justfile
index b2dba34..fa65d4d 100644
--- a/Justfile
+++ b/Justfile
@@ -40,9 +40,7 @@ default:
 
 # Release a new version for `setup-moonbit`
 release *OPTIONS:
-  @overlay use {{ join(SETUP_MOONBIT_PATH, 'nu', 'common.nu') }}; \
-    overlay use {{ join(SETUP_MOONBIT_PATH, 'nu', 'release.nu') }}; \
-    git-check --check-repo=1 {{SETUP_MOONBIT_PATH}}; \
+  @overlay use {{ join(SETUP_MOONBIT_PATH, 'nu', 'release.nu') }}; \
     make-release {{OPTIONS}}
 
 # Fetch official install scripts
diff --git a/nu/release.nu b/nu/release.nu
index 442428d..e564872 100644
--- a/nu/release.nu
+++ b/nu/release.nu
@@ -41,3 +41,14 @@ export def 'make-release' [
   git checkout $releaseVer; git tag $majorTag
   git push origin $majorTag $releaseVer --force
 }
+
+# Check if a git repo has the specified ref: could be a branch or tag, etc.
+export def has-ref [
+  ref: string   # The git ref to check
+] {
+  let checkRepo = (do -i { git rev-parse --is-inside-work-tree } | complete)
+  if not ($checkRepo.stdout =~ 'true') { return false }
+  # Brackets were required here, or error will occur
+  let parse = (do -i { git rev-parse --verify -q $ref } | complete)
+  if ($parse.stdout | is-empty) { false } else { true }
+}