$ git clone -n https://src.fedoraproject.org/rpms/R-bit64.git /var/lib/mock/f37-build-641366-71923/root/chroot_tmpdir/scmroot/R-bit64
Cloning into '/var/lib/mock/f37-build-641366-71923/root/chroot_tmpdir/scmroot/R-bit64'...
$ git reset --hard 20d632956a3b34d0ab9a6b3e3e57b0fe81656c2c
HEAD is now at 20d6329 R 4.2.1