$ git clone -n https://src.fedoraproject.org/rpms/perl-Eval-Context.git /var/lib/mock/f40-build-2017125-46277/root/chroot_tmpdir/scmroot/perl-Eval-Context
Cloning into '/var/lib/mock/f40-build-2017125-46277/root/chroot_tmpdir/scmroot/perl-Eval-Context'...
$ git fetch origin 86bd198fe663b6bfd0dc8189be9d8f38ea1a00cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Eval-Context
 * [new ref]         86bd198fe663b6bfd0dc8189be9d8f38ea1a00cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86bd198 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild