[type/__git] Fix if --owner / --group is numeric

Before, if --owner and/or --group was numeric, gencode-remote would generate
`chown` code every time.

cdist/conf/type/__git/explorer/group

@@ -1,5 +1,19 @@
-#!/bin/sh
+#!/bin/sh -e
 
-destination="/$__object_id/.git"
+destination="/${__object_id:?}/.git"
 
-stat --print "%G" "${destination}" 2>/dev/null || exit 0
+# shellcheck disable=SC2012
+group_gid=$(ls -ldn "${destination}" | awk '{ print $4 }')
+
+# NOTE: +1 because $((notanum)) prints 0.
+if test $((group_gid + 1)) -ge 0
+then
+	group_should=$(cat "${__object:?}/parameter/group")
+
+	if expr "${group_should}" : '[0-9]*$' >/dev/null
+	then
+		printf '%u\n' "${group_gid}"
+	else
+		printf '%s\n' "$(id -u -n "${group_gid}")"
+	fi
+fi

cdist/conf/type/__git/explorer/owner

@@ -1,5 +1,19 @@
-#!/bin/sh
+#!/bin/sh -e
 
-destination="/$__object_id/.git"
+destination="/${__object_id:?}/.git"
 
-stat --print "%U" "${destination}" 2>/dev/null || exit 0
+# shellcheck disable=SC2012
+owner_uid=$(ls -ldn "${destination}" | awk '{ print $3 }')
+
+# NOTE: +1 because $((notanum)) prints 0.
+if test $((owner_uid + 1)) -ge 0
+then
+	owner_should=$(cat "${__object:?}/parameter/owner")
+
+	if expr "${owner_should}" : '[0-9]*$' >/dev/null
+	then
+		printf '%u\n' "${owner_uid}"
+	else
+		printf '%s\n' "$(id -u -n "${owner_uid}")"
+	fi
+fi