$ git clone -n https://src.fedoraproject.org/rpms/perl-PerlIO-Layers.git /var/lib/mock/f40-build-2020068-46591/root/chroot_tmpdir/scmroot/perl-PerlIO-Layers
Cloning into '/var/lib/mock/f40-build-2020068-46591/root/chroot_tmpdir/scmroot/perl-PerlIO-Layers'...
$ git fetch origin 61347113af48b9ef87312d9384b990c22a4811c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PerlIO-Layers
 * [new ref]         61347113af48b9ef87312d9384b990c22a4811c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6134711 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild