$ git clone -n https://src.fedoraproject.org/rpms/gtk-sharp3.git /var/lib/mock/f37-build-666456-74382/root/chroot_tmpdir/scmroot/gtk-sharp3
Cloning into '/var/lib/mock/f37-build-666456-74382/root/chroot_tmpdir/scmroot/gtk-sharp3'...
$ git reset --hard 19bf63ac67cadae1c93ed0b8095bbf8b3275bd57
HEAD is now at 19bf63a add upstream patch for adding cairo-sharp.dll.config