$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-Telnet.git /var/lib/mock/f45-build-25439-611/root/chroot_tmpdir/scmroot/perl-Net-Telnet
Cloning into '/var/lib/mock/f45-build-25439-611/root/chroot_tmpdir/scmroot/perl-Net-Telnet'...
$ git fetch origin 253d8f042312e26f76c5fcd23721cc35df88990e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-Telnet
 * [new ref]         253d8f042312e26f76c5fcd23721cc35df88990e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 253d8f0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild