$ git clone -n https://src.fedoraproject.org/rpms/userspace-rcu.git /var/lib/mock/f31-build-70726-30532/root/chroot_tmpdir/scmroot/userspace-rcu
Cloning into '/var/lib/mock/f31-build-70726-30532/root/chroot_tmpdir/scmroot/userspace-rcu'...
$ git reset --hard 3a0341cbc6bc672ff580b748465c818fe5a8f609
HEAD is now at 3a0341c - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild