$ git clone -n https://gitee.com/winterddd/btrfs-progs.git /var/lib/mock/dist-an23-build-479238-74220/root/chroot_tmpdir/scmroot/btrfs-progs
Cloning into '/var/lib/mock/dist-an23-build-479238-74220/root/chroot_tmpdir/scmroot/btrfs-progs'...
$ git fetch origin a52efb6e62d1a93a214646d1220a83e0637736ba:KOJI_FETCH_HEAD
From https://gitee.com/winterddd/btrfs-progs
 * [new ref]         a52efb6e62d1a93a214646d1220a83e0637736ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a52efb6 fix: use correct gpgkey