$ git clone -n https://src.fedoraproject.org/rpms/libppd.git /var/lib/mock/f39-build-1596434-38373/root/chroot_tmpdir/scmroot/libppd
Cloning into '/var/lib/mock/f39-build-1596434-38373/root/chroot_tmpdir/scmroot/libppd'...
$ git fetch origin a20bae3fcb5dfaef07eef8ebc1b5981503d0cd46:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libppd
 * [new ref]         a20bae3fcb5dfaef07eef8ebc1b5981503d0cd46 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a20bae3 2240389 - libppd-2.0.0 is available