$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-unikey.git /var/lib/mock/f40-build-1971982-25224/root/chroot_tmpdir/scmroot/fcitx5-unikey
Cloning into '/var/lib/mock/f40-build-1971982-25224/root/chroot_tmpdir/scmroot/fcitx5-unikey'...
$ git fetch origin 542be4defe3349b677c44c07af6308ed74909f67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-unikey
 * [new ref]         542be4defe3349b677c44c07af6308ed74909f67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 542be4d update to upstream release 5.1.4