From 3536053b44b3007d4c1bd1462ead784221c7fcef Mon Sep 17 00:00:00 2001
From: LeRatierBretonnier <sylvain@lahiette.com>
Date: Tue, 23 Jun 2026 13:33:11 +0200
Subject: [PATCH] fix: pre-write SVN password to stdin to avoid deadlock on
 prompt

---
 svn_mirror/mirror.py | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/svn_mirror/mirror.py b/svn_mirror/mirror.py
index c2d567e..dfcee7f 100644
--- a/svn_mirror/mirror.py
+++ b/svn_mirror/mirror.py
@@ -232,13 +232,16 @@ class Mirror:
             text=True,
         )
 
+        # git svn prompts for password on stderr (no newline) and reads from
+        # stdin.  Write password immediately so it's buffered for the prompt.
+        if password:
+            process.stdin.write(password + "\n")
+            process.stdin.flush()
+
         for line in process.stdout or []:
             line = line.rstrip()
             if line:
                 logger.info("[git svn] %s", line)
-            if "Password for" in line and password:
-                process.stdin.write(password + "\n")
-                process.stdin.flush()
 
         ret = process.wait()
         if ret != 0: