$ git clone -n https://src.fedoraproject.org/rpms/R-Rcpp.git /var/lib/mock/f40-build-737659-107300/root/chroot_tmpdir/scmroot/R-Rcpp
Cloning into '/var/lib/mock/f40-build-737659-107300/root/chroot_tmpdir/scmroot/R-Rcpp'...
$ git reset --hard d16a832b7f39b5e85f6bfbb316c8f65dc01b1795
HEAD is now at d16a832 Fix build requires