$ git clone -n https://gitee.com/wenyuzifang/btrfs-progs.git /var/lib/mock/dist-an23-build-485174-74348/root/chroot_tmpdir/scmroot/btrfs-progs
Cloning into '/var/lib/mock/dist-an23-build-485174-74348/root/chroot_tmpdir/scmroot/btrfs-progs'...
$ git fetch origin d5e7fd5c85eb489b7da42eefb2c43cb94c4ff883:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/btrfs-progs
 * [new ref]         d5e7fd5c85eb489b7da42eefb2c43cb94c4ff883 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d5e7fd5 Update code from upstream