$ git clone -n https://src.fedoraproject.org/rpms/perl-Carp-Clan.git /var/lib/mock/f40-build-2620483-64683/root/chroot_tmpdir/scmroot/perl-Carp-Clan
Cloning into '/var/lib/mock/f40-build-2620483-64683/root/chroot_tmpdir/scmroot/perl-Carp-Clan'...
$ git fetch origin 620bfa0b86eecfa780ad5cd11a75e4b8030db0e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Carp-Clan
 * [new ref]         620bfa0b86eecfa780ad5cd11a75e4b8030db0e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 620bfa0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild