$ git clone -n https://gitee.com/wenyuzifang/trousers.git /var/lib/mock/dist-an23-build-472794-74118/root/chroot_tmpdir/scmroot/trousers
Cloning into '/var/lib/mock/dist-an23-build-472794-74118/root/chroot_tmpdir/scmroot/trousers'...
$ git fetch origin ce599741739627ba0cd46a910d448286a016d81b:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/trousers
 * [new ref]         ce599741739627ba0cd46a910d448286a016d81b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ce59974 Update code from upstream