Julia 1.6.0 add Package OhMyREPL

 ENV["JULIA_SSL_NO_VERIFY_HOSTS"] = "pkg.julialang.org"
"pkg.julialang.org"

julia> Downloads.download(url)
ERROR: schannel: failed to receive handshake, SSL/TLS connection failed while requesting https://pkg.julialang.org/package/7876af07-990d-54b4-ab0e-23690620f79a/46e44e869b4d90b96bd8ed1fdcf32244fddfb6cc
Stacktrace:
  [1] (::Downloads.var"#9#18"{IOStream, Base.DevNull, Nothing, Vector{Pair{String, String}}, Float64, Nothing, Bool, Bool, String, Int64, Bool, Bool})(easy::Downloads.Curl.Easy)
    @ Downloads C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:356
  [2] with_handle(f::Downloads.var"#9#18"{IOStream, Base.DevNull, Nothing, Vector{Pair{String, String}}, Float64, Nothing, Bool, Bool, String, Int64, Bool, Bool}, handle::Downloads.Curl.Easy)
    @ Downloads.Curl C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Curl\Curl.jl:60
  [3] #8
    @ C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:298 [inlined]
  [4] arg_write(f::Downloads.var"#8#17"{Base.DevNull, Nothing, Vector{Pair{String, String}}, Float64, Nothing, Bool, Bool, String, Int64, Bool, Bool}, arg::IOStream)
    @ ArgTools C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\ArgTools\src\ArgTools.jl:112
  [5] #7
    @ C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:297 [inlined]
  [6] arg_read
    @ C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\ArgTools\src\ArgTools.jl:61 [inlined]
  [7] request(url::String; input::Nothing, output::IOStream, method::Nothing, headers::Vector{Pair{String, String}}, timeout::Float64, progress::Nothing, verbose::Bool, throw::Bool, downloader::Nothing)
    @ Downloads C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:296
  [8] (::Downloads.var"#3#4"{Nothing, Vector{Pair{String, String}}, Float64, Nothing, Bool, Nothing, String})(output::IOStream)
    @ Downloads C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:209
  [9] arg_write(f::Downloads.var"#3#4"{Nothing, Vector{Pair{String, String}}, Float64, Nothing, Bool, Nothing, String}, arg::Nothing)
    @ ArgTools C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\ArgTools\src\ArgTools.jl:101
 [10] #download#2
    @ C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:208 [inlined]
 [11] download (repeats 2 times)
    @ C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Downloads\src\Downloads.jl:208 [inlined]
 [12] top-level scope
    @ REPL[5]:1

So this seems to be related to the new Downloads standard library package. Not sure how to debug this but an issue in https://github.com/JuliaLang/Downloads.jl would be the way to go in my opinion.

There is an issue open here problems with SSL host verification with proxy servers · Issue #108 · JuliaLang/Downloads.jl · GitHub