wsl 20.04: build failed in windows dir, but success in ubuntu's dir

[guotie]

build in /mnt/f/dot, failed with message:

@DESKTOP-L8C67IT:/mnt/f/dot/polkadot$ cargo build --release
   Compiling zstd-sys v1.4.20+zstd.1.4.9
   Compiling jemalloc-sys v0.3.2
   Compiling libz-sys v1.0.25
   Compiling toml v0.5.6
   Compiling camino v1.0.4
   Compiling semver v0.11.0
   Compiling serde_json v1.0.64
error: failed to run custom build command for `jemalloc-sys v0.3.2`

Caused by:
  process didn't exit successfully: `/mnt/f/dot/polkadot/target/release/build/jemalloc-sys-f87e040056d3217a/build-script-build` (exit status: 101)
  --- stdout
  TARGET=x86_64-unknown-linux-gnu
  HOST=x86_64-unknown-linux-gnu
  NUM_JOBS=8
  OUT_DIR="/mnt/f/dot/polkadot/target/release/build/jemalloc-sys-52320dc05d6d08f9/out"
  BUILD_DIR="/mnt/f/dot/polkadot/target/release/build/jemalloc-sys-52320dc05d6d08f9/out/build"
  SRC_DIR="/home/guotie/.cargo/registry/src/github.com-1ecc6299db9ec823/jemalloc-sys-0.3.2"
  OPT_LEVEL = Some("3")
  TARGET = Some("x86_64-unknown-linux-gnu")
  HOST = Some("x86_64-unknown-linux-gnu")
  CC_x86_64-unknown-linux-gnu = None
  CC_x86_64_unknown_linux_gnu = None
  HOST_CC = None
  CC = None
  CFLAGS_x86_64-unknown-linux-gnu = None
  CFLAGS_x86_64_unknown_linux_gnu = None
  HOST_CFLAGS = None
  CFLAGS = None
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some("false")
  CARGO_CFG_TARGET_FEATURE = Some("fxsr,sse,sse2")
  CC="cc"
  CFLAGS="-O3 -ffunction-sections -fdata-sections -fPIC -m64 -Wall"
  JEMALLOC_REPO_DIR="jemalloc"
  JEMALLOC_SRC_DIR="/mnt/f/dot/polkadot/target/release/build/jemalloc-sys-52320dc05d6d08f9/out/jemalloc"

  --- stderr
  thread 'main' panicked at 'failed to copy jemalloc source code to OUT_DIR: Error { kind: PermissionDenied, message: "permission denied" }', /home/guotie/.cargo/registry/src/github.com-1ecc6299db9ec823/jemalloc-sys-0.3.2/build.rs:148:10
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
^C  Building [=============>          ] 670/1125: zstd-sys(build), zstd-sys(build), toml