$ git clone -n https://src.fedoraproject.org/rpms/perl-Math-Int128.git /var/lib/mock/f42-build-876695-179772/root/chroot_tmpdir/scmroot/perl-Math-Int128
Cloning into '/var/lib/mock/f42-build-876695-179772/root/chroot_tmpdir/scmroot/perl-Math-Int128'...
$ git fetch origin 391612e799509f053bd97c23c2f07ce803c6e89c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Math-Int128
 * [new ref]         391612e799509f053bd97c23c2f07ce803c6e89c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 391612e Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild