$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-sayura.git /var/lib/mock/f40-build-1971963-25224/root/chroot_tmpdir/scmroot/fcitx5-sayura
Cloning into '/var/lib/mock/f40-build-1971963-25224/root/chroot_tmpdir/scmroot/fcitx5-sayura'...
$ git fetch origin 7802ee1d5cd908c5fe4535472f7b8648234d8fba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-sayura
 * [new ref]         7802ee1d5cd908c5fe4535472f7b8648234d8fba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7802ee1 update to upstream release 5.1.2