rebuild: add --branch to package options

rebuild.sh

@@ -25,6 +25,7 @@ build_package() {
    local install_as
    local makepkg_args="-srLcCf --noconfirm"
    local pull_url="https://aur.archlinux.org/$pkg.git"
+   local branch
 
    while (( $# ))
    do
@@ -37,6 +38,10 @@ build_package() {
             pull_url=$2
             shift 2
             ;;
+         --branch)
+            branch=-b "$2"
+            shift 2
+            ;;
          --install-as)
             install_as=$2
             shift 2
@@ -54,7 +59,7 @@ build_package() {
 
    if [[ ! -d ~/bin/$pkg ]]
    then
-      git clone "$pull_url"
+      git clone "$branch" "$pull_url"
    fi
 
    cd "$pkg" || exit_on_err