You can find http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/packages/jq_1.5-2_mipsel_24kc.ipk
You should enable the other available repositories. Here's my working distfeeds.conf:
src/gz reboot_core http://downloads.lede-project.org/snapshots/targets/ramips/mt76x8/packages
src/gz reboot_base http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/base
src/gz reboot_luci http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/luci
src/gz reboot_packages http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/packages
src/gz reboot_routing http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/routing
src/gz reboot_telephony http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/telephony
src/gz omega2_core http://repo.onion.io/omega2/packages/core
src/gz omega2_base http://repo.onion.io/omega2/packages/base
src/gz omega2_packages http://repo.onion.io/omega2/packages/packages
src/gz omega2_onion http://repo.onion.io/omega2/packages/onion