$ git clone -n https://src.fedoraproject.org/rpms/zsh.git /var/lib/mock/f39-build-2308502-57272/root/chroot_tmpdir/scmroot/zsh
Cloning into '/var/lib/mock/f39-build-2308502-57272/root/chroot_tmpdir/scmroot/zsh'...
$ git fetch origin 553eea06c46f96ce7b930f8eeb4ce52af241df2e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zsh
 * [new ref]         553eea06c46f96ce7b930f8eeb4ce52af241df2e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 553eea0 fix segfault in delerefilelist