fixed the vmain issue

Author: Saumya-R

scripts/workflow/checkout_repos.py

@@ -94,27 +94,59 @@ def checkout_repo(name, url, ref, path):
             print(f"  Detected commit hash. Cloning and then checking out.")
 
             # Clone the repository
-            subprocess.run(["git", "clone", auth_url, path], check=True, capture_output=True)
+            result = subprocess.run(
+                ["git", "clone", auth_url, path],
+                capture_output=True,
+                text=True
+            )
+            if result.returncode != 0:
+                print(f"  Git error: {result.stderr}", file=sys.stderr)
+                raise subprocess.CalledProcessError(result.returncode, result.args, result.stdout, result.stderr)
 
             # Checkout specific commit
-            subprocess.run(["git", "-C", path, "checkout", ref], check=True, capture_output=True)
+            result = subprocess.run(
+                ["git", "-C", path, "checkout", ref],
+                capture_output=True,
+                text=True
+            )
+            if result.returncode != 0:
+                print(f"  Git error: {result.stderr}", file=sys.stderr)
+                raise subprocess.CalledProcessError(result.returncode, result.args, result.stdout, result.stderr)
         else:
             print(f"Checking out {name} ({ref}) to {path}")
             print(f"  Detected branch/tag. Cloning with --branch.")
 
             # Clone with shallow copy and specific branch/tag
-            # Add 'v' prefix if not already present (common convention)
-            branch_ref = ref if ref.startswith("v") else f"v{ref}"
-            subprocess.run(
-                ["git", "clone", "--depth", "1", "--branch", branch_ref, auth_url, path],
-                check=True,
+            # Try the ref as-is first
+            result = subprocess.run(
+                ["git", "clone", "--depth", "1", "--branch", ref, auth_url, path],
                 capture_output=True,
+                text=True,
             )
 
+            if result.returncode != 0:
+                # If failed, try with 'v' prefix (common for version tags)
+                if not ref.startswith("v") and re.match(r"^\d+\.\d+", ref):
+                    print(f"  First attempt failed, retrying with 'v' prefix for version tag...")
+                    branch_ref = f"v{ref}"
+                    result = subprocess.run(
+                        ["git", "clone", "--depth", "1", "--branch", branch_ref, auth_url, path],
+                        capture_output=True,
+                        text=True,
+                    )
+                    if result.returncode != 0:
+                        print(f"  Git error: {result.stderr}", file=sys.stderr)
+                        raise subprocess.CalledProcessError(result.returncode, result.args, result.stdout, result.stderr)
+                else:
+                    print(f"  Git error: {result.stderr}", file=sys.stderr)
+                    raise subprocess.CalledProcessError(result.returncode, result.args, result.stdout, result.stderr)
+
         return True
 
     except subprocess.CalledProcessError as e:
         print(f"Error: Failed to checkout {name}: {e}", file=sys.stderr)
+        if hasattr(e, 'stderr') and e.stderr:
+            print(f"  Details: {e.stderr}", file=sys.stderr)
         return False