$ git clone -n https://src.fedoraproject.org/rpms/perl-Pipeline.git /var/lib/mock/f45-build-25857-613/root/chroot_tmpdir/scmroot/perl-Pipeline
Cloning into '/var/lib/mock/f45-build-25857-613/root/chroot_tmpdir/scmroot/perl-Pipeline'...
$ git fetch origin bb8bc8138cb20dc0ecfb6edb4faee92c02ba12a4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Pipeline
 * [new ref]         bb8bc8138cb20dc0ecfb6edb4faee92c02ba12a4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bb8bc81 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild