$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-table-extra.git /var/lib/mock/f41-build-side-1-2635248-26101/root/chroot_tmpdir/scmroot/fcitx5-table-extra
Cloning into '/var/lib/mock/f41-build-side-1-2635248-26101/root/chroot_tmpdir/scmroot/fcitx5-table-extra'...
$ git fetch origin 3b9b4561a0ba6a91450e079890fb11bafbab4905:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-table-extra
 * [new ref]         3b9b4561a0ba6a91450e079890fb11bafbab4905 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b9b456 Fix FTBFS (RHBZ#2300667)