diff --git a/downstream b/downstream
new file mode 100755
index 0000000..4389535
--- /dev/null
+++ b/downstream
@@ -0,0 +1,29 @@
+#!/bin/bash
+if [ $# -lt 2 ]; then
+	echo "[!]  must specify both repository and remote"
+	exit
+fi
+
+REPOSITORY="$1"
+URL="$2"
+
+if [[ ! "$REPOSITORY" == *.git ]]; then
+	REPOSITORY="$REPOSITORY.git"
+fi
+
+if [ ! -d "/srv/git/$REPOSITORY" ]; then
+	echo "[!]  repository does not exist"
+	exit
+fi
+
+REMOTE="origin"
+if [[ $# -eq 3 ]]; then
+	REMOTE="$3"
+fi
+
+cd "/srv/git/$REPOSITORY"
+
+git remote remove "$REMOTE" # TODO this complains about branches abandoned, but we will recreate the remote right after this, so maybe do it smartly and check?
+git remote add "$REMOTE" "$URL"
+git config remote.$REMOTE.mirror "true"
+git config remote.$REMOTE.direction "down"
diff --git a/help b/help
index 5b987ba..dd08080 100755
--- a/help
+++ b/help
@@ -5,6 +5,7 @@ echo "  $ ls                                 list all repositories, marks hidden
 echo "  $ new <name>                         create new repository"
 echo "  $ mirror <url> [name]                mirror remote repository"
 echo "  $ upstream <repo> <url>              set repository to push to a given remote"
+echo "  $ downstream <repo> <url>            set repository to fetch from a given remote"
 echo "  $ sync                               push and pull all mirrored repositories"
 echo "  $ tree <repo>                        show file tree of repo at HEAD"
 echo "  $ log <repo>                         show commit log of repo"