$ git clone -n https://gitee.com/wenyuzifang/iso-codes.git /var/lib/mock/dist-an23-build-450363-73460/root/chroot_tmpdir/scmroot/iso-codes
Cloning into '/var/lib/mock/dist-an23-build-450363-73460/root/chroot_tmpdir/scmroot/iso-codes'...
$ git fetch origin a6c9b48def3a1a1d9ff488d39547318c596d1981:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/iso-codes
 * [new ref]         a6c9b48def3a1a1d9ff488d39547318c596d1981 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6c9b48 Update code from upstream