$ git clone -n https://src.fedoraproject.org/rpms/libwnck3.git /var/lib/mock/f31-build-47688-26959/root/chroot_tmpdir/scmroot/libwnck3
Cloning into '/var/lib/mock/f31-build-47688-26959/root/chroot_tmpdir/scmroot/libwnck3'...
$ git reset --hard e6c94b7e72324eef1f5c7d467718211fc054f6b3
HEAD is now at e6c94b7 fix sources