$ git clone -n https://src.fedoraproject.org/rpms/libnotifymm.git /var/lib/mock/f31-build-59186-28552/root/chroot_tmpdir/scmroot/libnotifymm
Cloning into '/var/lib/mock/f31-build-59186-28552/root/chroot_tmpdir/scmroot/libnotifymm'...
$ git reset --hard b8bbd2113669e0d1ca288cd3bd2b1a7efeaa183e
HEAD is now at b8bbd21 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild