Use $_git_cmd internally

lib/git/branch_shortcuts.sh

@@ -14,7 +14,7 @@ unalias $git_branch_alias > /dev/null 2>&1; unset -f $git_branch_alias > /dev/nu
 function _scmb_git_branch_shortcuts {
   # Use ruby to inject numbers into ls output
   ruby -e "$( cat <<EOF
-    output = %x(script -q -c "git branch --color=always \"$@\"" /dev/null)
+    output = %x(script -q -c "$_git_cmd branch --color=always \"$@\"" /dev/null)
     line_count = output.lines.to_a.size
     output.lines.each_with_index do |line, i|
       spaces = (line_count > 9 && i < 9 ? "  " : " ")
@@ -25,7 +25,7 @@ EOF
 
   # Set numbered file shortcut in variable
   local e=1
-  for branch in $(git branch "$@" | sed "s/^[* ]\{2\}//"); do
+  for branch in $($_git_cmd branch "$@" | sed "s/^[* ]\{2\}//"); do
     export $git_env_char$e="$branch"
     if [ "${scmbDebug:-}" = "true" ]; then echo "Set \$$git_env_char$e  => $file"; fi
     let e++