$ git clone -n https://src.fedoraproject.org/rpms/perl-Time-y2038.git /var/lib/mock/f40-build-731679-104578/root/chroot_tmpdir/scmroot/perl-Time-y2038
Cloning into '/var/lib/mock/f40-build-731679-104578/root/chroot_tmpdir/scmroot/perl-Time-y2038'...
$ git fetch origin f5c82ee68aecac71bbb88b15ef9135da105ada33:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Time-y2038
 * [new ref]         f5c82ee68aecac71bbb88b15ef9135da105ada33 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f5c82ee Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild