[bug] conan does not consider RREV for --build-require

[thorsten-klein]

Environment details

• Operating System+version: Ubuntu20
• Compiler+version: -
• Conan version: 1.60.1
• Python version: 3.8.10

Steps to reproduce

Install a specific revision of a package, e.g. conan install --build-require cmake/3.22.3@#8d3544c0d9b1e909d14f45e4eba896f3

Logs

$ conan install --build-require cmake/3.22.3@#8d3544c0d9b1e909d14f45e4eba896f3
Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=system
os=Linux
[options]
[build_requires]
[env]
[conf]
tools.env.virtualenv:auto_use=True
tools.system.package_manager:mode=install
tools.system.package_manager:sudo=True
tools.cmake.cmaketoolchain:find_package_prefer_config=False

cmake/3.22.3: Not found in local cache, looking in remotes...
cmake/3.22.3: Trying with 'conancenter'...
Decompressing conan_export.tgz completed [0.00k]                                         
cmake/3.22.3: Downloaded recipe revision a6a56a74df4d58b36d981508706815f0

Issue: Revision a6a56a74df4d58b36d981508706815f0 is downloaded.

[memsharded]

Closed by #14679