diff --git a/doc/0-UPGRADE.mkd b/doc/0-UPGRADE.mkd
index 8c80bb7..c106bc7 100644
--- a/doc/0-UPGRADE.mkd
+++ b/doc/0-UPGRADE.mkd
@@ -35,6 +35,9 @@ have to do it at a "quiet" time or something.
 
         src/gl-compile-conf
 
+    (if you've already setup "push-to-admin", this step should be replaced by
+    a "git push".  Make a dummy commit if needed, to make the push happen).
+
 And you're done.
 
 ### upgrade notes for specific versions
diff --git a/src/install.pl b/src/install.pl
index 85b8607..017854f 100755
--- a/src/install.pl
+++ b/src/install.pl
@@ -64,3 +64,9 @@ for my $repo (`find . -type d -name "*.git"`) {
     system("cp $GL_ADMINDIR/src/update-hook.pl $repo/hooks/update");
     chmod 0755, "$repo/hooks/update";
 }
+
+# oh and one of those repos is a bit more special and has an extra hook :)
+system("cp $GL_ADMINDIR/src/pta-hook.sh gitolite-admin.git/hooks/post-update");
+system("perl", "-i", "-p", "-e", "s(export GL_ADMINDIR=.*)(export GL_ADMINDIR=$GL_ADMINDIR)",
+    "gitolite-admin.git/hooks/post-update");
+chmod 0755, "gitolite-admin.git/hooks/post-update";
diff --git a/src/pta-hook.sh b/src/pta-hook.sh
index 23a2f23..5009313 100755
--- a/src/pta-hook.sh
+++ b/src/pta-hook.sh
@@ -16,7 +16,8 @@ mkdir  $GL_ADMINDIR/conf/fragments
 for br in $(git for-each-ref --format='%(refname:short)')
 do
     # skip master (duh!)
-    [[ $br == master ]] && continue
+    [ "$br" = "master" ] && continue
+
     # all other branches *should* contain a file called <branchname>.conf
     # inside conf/fragments; if so copy it
     if git show $br:conf/fragments/$br.conf > /dev/null 2>&1