$ git clone -n https://gitee.com/renbo02/cargo-vendored-nix.git /var/lib/mock/dist-an8.7-build-272675-64170/root/chroot_tmpdir/scmroot/cargo-vendored-nix
Cloning into '/var/lib/mock/dist-an8.7-build-272675-64170/root/chroot_tmpdir/scmroot/cargo-vendored-nix'...
$ git fetch origin a8:KOJI_FETCH_HEAD
From https://gitee.com/renbo02/cargo-vendored-nix
 * [new branch]      a8         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79aab55 add nix-0.62.2