$ git clone -n https://src.fedoraproject.org/rpms/dhcp.git /var/lib/mock/f40-build-2207615-52086/root/chroot_tmpdir/scmroot/dhcp
Cloning into '/var/lib/mock/f40-build-2207615-52086/root/chroot_tmpdir/scmroot/dhcp'...
$ git fetch origin e226f99ab06956f44a527ef17ade621543e7e14b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dhcp
 * [new ref]         e226f99ab06956f44a527ef17ade621543e7e14b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e226f99 Mark dhcp (sub)packages as deprecated