$ git clone -n https://src.fedoraproject.org/rpms/R-cpp11.git /var/lib/mock/f45-build-6053-346/root/chroot_tmpdir/scmroot/R-cpp11
Cloning into '/var/lib/mock/f45-build-6053-346/root/chroot_tmpdir/scmroot/R-cpp11'...
$ git fetch origin 5da5844bae2fc1ce02e89dcff19ee44caf149a6f:KOJI_FETCH_HEAD
fatal: unable to access 'https://src.fedoraproject.org/rpms/R-cpp11.git/': Failed to connect to src.fedoraproject.org port 443 after 1464 ms: Could not connect to server
$ git reset --hard 5da5844bae2fc1ce02e89dcff19ee44caf149a6f
HEAD is now at 5da5844 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild