$ git clone -n https://src.fedoraproject.org/rpms/glib-networking.git /var/lib/mock/f40-build-2442336-61026/root/chroot_tmpdir/scmroot/glib-networking
Cloning into '/var/lib/mock/f40-build-2442336-61026/root/chroot_tmpdir/scmroot/glib-networking'...
$ git fetch origin dd8954d0f776a9eaf282b074343c24a4677f178b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glib-networking
 * [new ref]         dd8954d0f776a9eaf282b074343c24a4677f178b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd8954d Update to 2.80.alpha