$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-chinese-addons.git /var/lib/mock/f39-build-1918275-42933/root/chroot_tmpdir/scmroot/fcitx5-chinese-addons
Cloning into '/var/lib/mock/f39-build-1918275-42933/root/chroot_tmpdir/scmroot/fcitx5-chinese-addons'...
$ git fetch origin 5304209270b27ee98c0db3b2c41f3fa51dfbdc61:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-chinese-addons
 * [new ref]         5304209270b27ee98c0db3b2c41f3fa51dfbdc61 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5304209 update to upstream release 5.1.2