diff --git a/.datalad/procedures/clean-local-branches.sh b/.datalad/procedures/clean-local-branches.sh
new file mode 100755
index 0000000..504630b
--- /dev/null
+++ b/.datalad/procedures/clean-local-branches.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+git fetch --prune
+
+current_branches=$(git branch --format='%(refname:short)')
+echo "Current local branches:"
+echo "$current_branches"
+
+echo "Deleting local branches that are already merged into main or master..."
+branches=$(git branch -vv | grep ': gone]' | awk '{print $1}')
+
+if [ -n "$branches" ]; then
+    echo "$branches" | xargs git branch -d
+fi
+
+echo "done"
\ No newline at end of file