Unexpected remotecall_fetch behavior

julia> versioninfo()
Julia Version 1.10.0
Commit 3120989f39b (2023-12-25 18:01 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × AMD EPYC 7571
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, znver1)
  Threads: 1 on 4 virtual cores

2. juliaup

3. MWE:

julia> using Distributed

julia> addprocs(3)
3-element Vector{Int64}:
 2
 3
 4

julia> @everywhere [3,4] begin
         a = myid()
       end

julia> @fetchfrom 3 a
3

julia> a = 1
1

julia> @fetchfrom 3 a
1 

# looks like instead of fetching from pid=3, it uses a locally cached 'a'

Start by reproducing the provided Julia 1.10 MWE in Distributed.jl, focusing on the @fetchfrom and remotecall_fetch entry points after addprocs. Trace why @fetchfrom 3 a returns the local value after a is reassigned; done means it fetches the value of a from process 3 consistently.