$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-CipherSaber.git /var/lib/mock/f45-build-22572-593/root/chroot_tmpdir/scmroot/perl-Crypt-CipherSaber
Cloning into '/var/lib/mock/f45-build-22572-593/root/chroot_tmpdir/scmroot/perl-Crypt-CipherSaber'...
$ git fetch origin 240155b09201bbf751e5e2a772d1869619d17c4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-CipherSaber
 * [new ref]         240155b09201bbf751e5e2a772d1869619d17c4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 240155b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild