$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-DHCP.git /var/lib/mock/f45-build-25234-610/root/chroot_tmpdir/scmroot/perl-Net-DHCP
Cloning into '/var/lib/mock/f45-build-25234-610/root/chroot_tmpdir/scmroot/perl-Net-DHCP'...
$ git fetch origin 8d2b4d86ae7aa47960f7c2654d3c648ffa65d029:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-DHCP
 * [new ref]         8d2b4d86ae7aa47960f7c2654d3c648ffa65d029 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8d2b4d8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild