$ git clone -n https://src.fedoraproject.org/rpms/bc.git /var/lib/mock/f31-build-61514-28936/root/chroot_tmpdir/scmroot/bc
Cloning into '/var/lib/mock/f31-build-61514-28936/root/chroot_tmpdir/scmroot/bc'...
$ git reset --hard b87f01fe8a3ed3b93f5a9d221ddb9b26e1c13107
HEAD is now at b87f01f - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild