$ git clone -n https://src.fedoraproject.org/rpms/libwnck.git /var/lib/mock/f31-build-47687-26959/root/chroot_tmpdir/scmroot/libwnck
Cloning into '/var/lib/mock/f31-build-47687-26959/root/chroot_tmpdir/scmroot/libwnck'...
$ git reset --hard a5ccd160bb790d10dc1078aa2e108a24eac99a29
HEAD is now at a5ccd16 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild