$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-rime.git /var/lib/mock/f40-build-2663692-67014/root/chroot_tmpdir/scmroot/fcitx5-rime
Cloning into '/var/lib/mock/f40-build-2663692-67014/root/chroot_tmpdir/scmroot/fcitx5-rime'...
$ git fetch origin 706e7e2cba6e4ce7ef6c21e0a04b6c158f82bfbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-rime
 * [new ref]         706e7e2cba6e4ce7ef6c21e0a04b6c158f82bfbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 706e7e2 update to upstream release 5.1.5