$ git clone -n https://src.fedoraproject.org/rpms/dhcpcd.git /var/lib/mock/f39-build-2099881-50445/root/chroot_tmpdir/scmroot/dhcpcd
Cloning into '/var/lib/mock/f39-build-2099881-50445/root/chroot_tmpdir/scmroot/dhcpcd'...
$ git fetch origin 8981497a7b531bf4b3208d6057bd05fe5d002ef1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhcpcd
 * [new ref]         8981497a7b531bf4b3208d6057bd05fe5d002ef1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8981497 Update to 10.0.6 (rhbz#2255164)