$ git clone -n https://src.fedoraproject.org/rpms/perl-Perl6-Junction.git /var/lib/mock/f40-build-2020006-46584/root/chroot_tmpdir/scmroot/perl-Perl6-Junction
Cloning into '/var/lib/mock/f40-build-2020006-46584/root/chroot_tmpdir/scmroot/perl-Perl6-Junction'...
$ git fetch origin 6cd00c3852981f46f1791574f3ac9ca1d741d56b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Perl6-Junction
 * [new ref]         6cd00c3852981f46f1791574f3ac9ca1d741d56b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6cd00c3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild