$ git clone -n https://src.fedoraproject.org/rpms/perl-Number-Bytes-Human.git /var/lib/mock/f45-build-25455-611/root/chroot_tmpdir/scmroot/perl-Number-Bytes-Human
Cloning into '/var/lib/mock/f45-build-25455-611/root/chroot_tmpdir/scmroot/perl-Number-Bytes-Human'...
$ git fetch origin a0a86813cddd474d1b4f5dfd685573a72bca15d2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Number-Bytes-Human
 * [new ref]         a0a86813cddd474d1b4f5dfd685573a72bca15d2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0a8681 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild