From 2812d5accf5428596e25f9e95376321416ee3e4c Mon Sep 17 00:00:00 2001
From: Viktor Ashirov <vashirov@redhat.com>
Date: Feb 26 2026 10:49:25 +0000
Subject: pre_push_check: unset GIT_DIR to fix worktree support


When running inside a git hook from a worktree, git sets GIT_DIR
to the worktree's git directory. If inherited by subprocess calls,
it causes git commands to operate on the worktree instead of the
temporary clone, detaching its HEAD.

Remove GIT_DIR from the environment before running git commands in
the temporary clone and restore it afterward.

Fixes: #769

Signed-off-by: Viktor Ashirov <vashirov@redhat.com>

---

diff --git a/pyrpkg/__init__.py b/pyrpkg/__init__.py
index 359c09b..2e49132 100644
--- a/pyrpkg/__init__.py
+++ b/pyrpkg/__init__.py
@@ -4582,6 +4582,7 @@ class Commands(object):
 
         try:
             clone_dir = tempfile.mkdtemp(prefix="pre_push_hook_")
+            saved_git_dir = os.environ.pop('GIT_DIR', None)
             for cmd in [
                 ('git', 'clone', self.path, clone_dir),
                 ('git', 'checkout', ref),
@@ -4628,6 +4629,8 @@ class Commands(object):
                 self.log.warning(show_hint)
                 sys.exit(3)
         finally:
+            if saved_git_dir is not None:
+                os.environ['GIT_DIR'] = saved_git_dir
             self._cleanup_tmp_dir(clone_dir)
 
         source_files = []