$ git clone -n https://src.fedoraproject.org/rpms/libblockdev.git /var/lib/mock/f31-build-68109-30155/root/chroot_tmpdir/scmroot/libblockdev
Cloning into '/var/lib/mock/f31-build-68109-30155/root/chroot_tmpdir/scmroot/libblockdev'...
$ git reset --hard 80bac6f83a00c24faa5afb8948c8bb6963473b26
HEAD is now at 80bac6f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild