$ git clone -n https://src.fedoraproject.org/rpms/perl-Return-Type.git /var/lib/mock/f45-build-26020-614/root/chroot_tmpdir/scmroot/perl-Return-Type
Cloning into '/var/lib/mock/f45-build-26020-614/root/chroot_tmpdir/scmroot/perl-Return-Type'...
$ git fetch origin 59f8dca2764d751403bf3a8432fa61d028bb83e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Return-Type
 * [new ref]         59f8dca2764d751403bf3a8432fa61d028bb83e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59f8dca Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild