$ git clone -n https://src.fedoraproject.org/rpms/perl-Eval-LineNumbers.git /var/lib/mock/f45-build-23419-597/root/chroot_tmpdir/scmroot/perl-Eval-LineNumbers
Cloning into '/var/lib/mock/f45-build-23419-597/root/chroot_tmpdir/scmroot/perl-Eval-LineNumbers'...
$ git fetch origin 9b6fc6b69d1340bb72df2e8162024c2cf5091257:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Eval-LineNumbers
 * [new ref]         9b6fc6b69d1340bb72df2e8162024c2cf5091257 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b6fc6b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild