diff --git a/bin/add-git-folder b/bin/add-git-folder
index 113c733..41f8520 100755
--- a/bin/add-git-folder
+++ b/bin/add-git-folder
@@ -20,13 +20,10 @@ add-git-folder() {
     # Ensure branch is Odoo version
     git -C "$3" switch "$1"
 
-    # Save version
-    save-version
-
-    # Restore staged submodule files
-    git restore --staged .gitmodules "$3"
-
     # Remove from working tree
-    # rm -rf .git/modules/"$2" || true
-    # git rm --cached "$2" || true
+    rm -rf .git/modules/"$2" || true
+    git rm --cached "$2" || true
+
+    # Save version
+    save-git-folder
 }
\ No newline at end of file
diff --git a/bin/add-git-merge b/bin/add-git-merge
new file mode 100755
index 0000000..61762db
--- /dev/null
+++ b/bin/add-git-merge
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+add-git-merge() {
+    if [[ -z "$1" ]]; then
+        echo '$1/remote is empty.' >&2
+        exit 1
+    fi
+    if [[ -z "$2" ]]; then
+        echo '$2/merge is empty.' >&2
+        exit 1
+    fi
+    if [[ -z "$3" ]]; then
+        echo '$3/path is empty.' >&2
+        exit 1
+    fi
+
+    local remote_name="$1"
+    local merge_ref="$2"
+    local submodule_path="$3"
+
+    git config -f .gitmodules --add merge."$submodule_path"."$remote_name" "$merge_ref"
+}
\ No newline at end of file
diff --git a/bin/add-git-remote b/bin/add-git-remote
index 8e1c92d..9b3b898 100755
--- a/bin/add-git-remote
+++ b/bin/add-git-remote
@@ -2,18 +2,23 @@
 
 add-git-remote() {
     if [[ -z "$1" ]]; then
-        echo '$1/remote is empty.'
-        exit
+        echo '$1/remote is empty.' >&2
+        exit 1
     fi
     if [[ -z "$2" ]]; then
-        echo '$2/url is empty.'
-        exit
+        echo '$2/url is empty.' >&2
+        exit 1
     fi
     if [[ -z "$3" ]]; then
-        echo '$3/path is empty.'
-        exit
+        echo '$3/path is empty.' >&2
+        exit 1
     fi
 
-    echo "Add remote $1 with url $2 to $3:"
-    git -C "$3" remote add "$1" "$2"
+    local remote_name="$1"
+    local remote_url="$2"
+    local submodule_path="$3"
+
+    git -C "$submodule_path" remote add "$remote_name" "$remote_url" 2>/dev/null || true
+
+    git config -f .gitmodules --add remotes."$submodule_path"."$remote_name" "$remote_url"
 }
\ No newline at end of file
diff --git a/bin/merge-git-remote b/bin/merge-git-remote
new file mode 100755
index 0000000..f35e5f2
--- /dev/null
+++ b/bin/merge-git-remote
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+merge-git-remote() {
+    local git_folders=$(ls-git-folder .)
+
+    for git_folder in $git_folders; do
+        git_folder="${git_folder#./}"
+
+        local remote_names
+        remote_names=$(git config -f .gitmodules --get-regexp "remotes\.$git_folder\..*" | sed 's/.*\.\(.*\)$/\1/')
+
+        if [[ -z "$remote_names" ]]; then
+            continue
+        fi
+
+        for remote_name in $remote_names; do
+            local remote_url=$(git config -f .gitmodules remotes."$git_folder"."$remote_name")
+            if [[ -z "$remote_url" ]]; then
+                continue
+            fi
+
+            git -C "$git_folder" remote add "$remote_name" "$remote_url" 2>/dev/null || true
+
+            local merge_ref=$(git config -f .gitmodules merge."$git_folder"."$remote_name")
+            if [[ -z "$merge_ref" ]]; then
+                merge_ref="HEAD"
+            fi
+
+            git -C "$git_folder" fetch "$remote_name"
+
+            git -C "$git_folder" checkout -B merged "$remote_name/$merge_ref" 2>/dev/null || \
+            git -C "$git_folder" checkout -b merged "$remote_name/$merge_ref"
+
+            git -C "$git_folder" merge "$remote_name/$merge_ref" 2>/dev/null || true
+        done
+    done
+}
\ No newline at end of file