$ git clone -n https://src.fedoraproject.org/rpms/emacs-common-w3m.git /var/lib/mock/f40-build-1995276-43888/root/chroot_tmpdir/scmroot/emacs-common-w3m
Cloning into '/var/lib/mock/f40-build-1995276-43888/root/chroot_tmpdir/scmroot/emacs-common-w3m'...
$ git fetch origin 8843801e0da6bb9ce226d870070d532b1d778336:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-common-w3m
 * [new ref]         8843801e0da6bb9ce226d870070d532b1d778336 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8843801 Rebase to 1.4.632 in git.