$ git clone -n https://src.fedoraproject.org/rpms/rust-tokio.git /var/lib/mock/f38-build-side-43-rust-devel-1399539-31136/root/chroot_tmpdir/scmroot/rust-tokio
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1399539-31136/root/chroot_tmpdir/scmroot/rust-tokio'...
$ git fetch origin e71bf38489426a05de26a83a679c1eb0e2d07b94:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-tokio
 * [new ref]         e71bf38489426a05de26a83a679c1eb0e2d07b94 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e71bf38 Update to version 1.32.0; Fixes RHBZ#2231625