$ git clone -n https://src.fedoraproject.org/rpms/perl-NNTPClient.git /var/lib/mock/f45-build-25239-610/root/chroot_tmpdir/scmroot/perl-NNTPClient
Cloning into '/var/lib/mock/f45-build-25239-610/root/chroot_tmpdir/scmroot/perl-NNTPClient'...
$ git fetch origin d2b6301e217155d34121318f6f857967658ca4d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-NNTPClient
 * [new ref]         d2b6301e217155d34121318f6f857967658ca4d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2b6301 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild