$ git clone -n https://src.fedoraproject.org/rpms/perl-String-Interpolate-Named.git /var/lib/mock/f45-build-26286-616/root/chroot_tmpdir/scmroot/perl-String-Interpolate-Named
Cloning into '/var/lib/mock/f45-build-26286-616/root/chroot_tmpdir/scmroot/perl-String-Interpolate-Named'...
$ git fetch origin fcd621794912ef6be0df887bd1903beafb105e3e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-String-Interpolate-Named
 * [new ref]         fcd621794912ef6be0df887bd1903beafb105e3e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcd6217 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild