diff --git a/docs/repro.8.txt b/docs/repro.8.txt
index 98c30c5..5f81bf0 100644
--- a/docs/repro.8.txt
+++ b/docs/repro.8.txt
@@ -32,6 +32,11 @@ Options
         `DIFFOSCOPE` can be set in linkman:repro.conf[5] to change the
         diffoscope command.
 
+*-f*::
+        When enabled, `repro` check for a PKGBUILD file in the current working
+        directory. This one is used to build the package instead of checking out
+        a PKGBUILD from asp.
+
 See Also
 --------
 linkman:makepkg[8]
diff --git a/repro.in b/repro.in
index f300622..6f225b7 100755
--- a/repro.in
+++ b/repro.in
@@ -208,7 +208,7 @@ install -d -o builduser -g builduser /pkgdest
 install -d -o builduser -g builduser /srcpkgdest
 install -d -o builduser -g builduser /build
 __END__
-    exec_nspawn "$build" $args sudo -iu builduser bash -c ". /etc/profile; cd /startdir; SOURCE_DATE_EPOCH=$SOURCE_DATE_EPOCH makepkg -sc --noconfirm --skippgpcheck $cmds"
+    exec_nspawn "$build" $args setsid -f -c -w sudo -iu builduser bash -c ". /etc/profile; cd /startdir; SOURCE_DATE_EPOCH=$SOURCE_DATE_EPOCH makepkg -sc --noconfirm --skippgpcheck $cmds"
     mkdir -p "./build"
     for pkgfile in "$BUILDDIRECTORY/$build"/pkgdest/*; do
         mv "$pkgfile" "./build/"