$ git clone -n https://src.fedoraproject.org/rpms/dhcp.git /var/lib/mock/f42-build-side-1-3501707-45976/root/chroot_tmpdir/scmroot/dhcp
Cloning into '/var/lib/mock/f42-build-side-1-3501707-45976/root/chroot_tmpdir/scmroot/dhcp'...
$ git fetch origin 5f057ac436bef2c8fbcc6acf8608803aa00b37a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhcp
 * [new ref]         5f057ac436bef2c8fbcc6acf8608803aa00b37a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f057ac Correct function declarations in server/dhcpv6.c