$ git clone -n https://src.fedoraproject.org/rpms/linsmith.git /var/lib/mock/f40-build-2009086-45449/root/chroot_tmpdir/scmroot/linsmith
Cloning into '/var/lib/mock/f40-build-2009086-45449/root/chroot_tmpdir/scmroot/linsmith'...
$ git fetch origin 9428a6cf53475502c6243bafe68788c73c883747:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/linsmith
 * [new ref]         9428a6cf53475502c6243bafe68788c73c883747 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9428a6c opt-in to autochangelog