$ git clone -n https://gitee.com/fundawang/rust.git /var/lib/mock/dist-an23-build-184533-60433/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/dist-an23-build-184533-60433/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin b84ea22efc8acc561fb0995878c88c08280e8fb4:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/rust
 * [new ref]         b84ea22efc8acc561fb0995878c88c08280e8fb4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b84ea22 2nd round rebuild without bootstrap