$ git clone -n https://src.fedoraproject.org/rpms/R-promises.git /var/lib/mock/f31-build-74151-31083/root/chroot_tmpdir/scmroot/R-promises
Cloning into '/var/lib/mock/f31-build-74151-31083/root/chroot_tmpdir/scmroot/R-promises'...
$ git reset --hard 38ccef53c2413f74dcc30858b1bd04f9fb629e67
HEAD is now at 38ccef5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild